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DCENT_OS 0.9.0 beta20261002: Experimental Downloads by Exact Control Board

DCENT_OS beta download record

One model. One board. One matching file set.

Firmware 0.9.0 · beta20261002 · Experimental. Download availability does not establish mining, installation or recovery readiness.

29exact-board cards
150required files verified
Pendingphysical qualification

Your beta download starts here

Match your Antminer. Then match its board.

  1. Choose the exact model
  2. Confirm the control board
  3. Open files and verify

Current release: beta20261002 · Experimental. 28 model labels, 29 exact-board status cards. All required file sets are hosted. Physical qualification is pending; each card defines its own route.

Choose both the exact model and the controller you have identified. A model sticker or family name alone is insufficient. Unsure, CVitek or another unmatched board? Identify the control board first; keep existing firmware if no exact card matches.

No board is selected automatically. Confirm the exact controller and board target; a result is a release card, not permission to flash.

Select an exact model and a confirmed control board.
Availability and installation limits

beta20261002 has 29 exact-board status cards; 29 sets have retained or verified public static URLs. There are 17 raw SD images, 11 route-restricted archives and one BeagleBone developer payload. Only 13 raw-image rows have a lab SD route; 4 are inspection only while permissions conflict. Physical qualification is pending. The automated installer route is unavailable because its signed host does not resolve. Static file availability and installation permission are separate.

Signed release channel: beta; maturity label: Experimental.

These packages use a development key explicitly approved for this Experimental distribution. The July public key and default installer trust pins remain unchanged. Select the development key explicitly for verification of this release.

Source scope: the project daemon, dashboard and Buildroot integration are GPL-3.0. Third-party boot/kernel source correspondence and redistribution permission remain unverified. The automated installer route is unavailable; these are static downloads.

Development signing key, source downloads and coverage limits
Raw Ed25519 public key hex
131d0f0830b9a4118fe2bfb0670babef628a9611aa186d05db081ce0d1599bec
SHA-256 fingerprint of raw public key
372a5c3e8a85110ef322b1bccf79187bfe801cea890c89bdc35ad6b35abb2fbc
PEM-file SHA-256
e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Download the development public key · Matching DCENT_OS project source (scoped; 4,614 files) — SHA-256 6031874a170d9b684a1cb3807e7a5166127d3fd2e2b19f09d628963302fcd04e

Matching DCENT_OS project source is provided with partial dependency coverage. Third-party boot/kernel source correspondence and finished-image redistribution permission are unverified. Development signing-key approval does not establish redistribution permission or license clearance. One restricted compiler payload was withdrawn and is excluded from the replacement source bundle. No complete firmware corresponding-source, GPL-compliance or reproducibility claim is made. Fifteen unrelated raw vendor fixture files are excluded from the clean project-source replacement. BeagleBone S19j Pro has a separate retained legal inventory:199 of279 records supplied,79 unmatched and1 restricted input withheld. External AM335x boot assets remain separate unidentified prerequisites. The six retained source bundles describe the previous publication scope; they do not establish complete source coverage for the nine additional Amlogic packages, whose legal inventory and vendor/dependency closure remain unassessed.

Original 17-set public dependency/legal inventory matches: 186 of 259 records; 72 remain unmatched; one restricted compiler payload is withheld. Read the source coverage README and delivery manifest, including the unverified third-party kernel and U-Boot correspondence.

T17e and S17e each have a separate dependency/legal evidence inventory: 185 of 257 records matched, 71 unmatched and one restricted input withheld. Their distinct stock OM kernel/boot/fabric source correspondence and redistribution permission remain unverified. These counts do not replace the original 17-set inventory above.

BeagleBone S19j Pro has its own 199/279 retained legal inventory: 79 unmatched and one restricted compiler input withheld. Its source supplement adds 13 upstream source archives and 15 exact license-record files. This does not establish complete source, reproducibility, vendor permission or missing AM335x boot assets.

Questions before downloading

Before you choose a download

Does a download mean my Antminer is qualified for mining?

No. These exact-board cards record local package qualification and their separate static availability. Physical qualification remains pending; review the exact row's installation scope and recovery instructions.

Can an S17 image be used on S17 Pro or an Amlogic controller?

Do not infer compatibility from the family name. The S17 row covers am2-s17p on its documented Xilinx controller. It does not establish S17 Pro, Amlogic or BeagleBone installation availability.

What source material is public now?

Matching DCENT_OS project source is provided with partial dependency coverage. Third-party boot/kernel source correspondence and finished-image redistribution permission are unverified. Development signing-key approval does not establish redistribution permission or license clearance. One restricted compiler payload was withdrawn and is excluded from the replacement source bundle. No complete firmware corresponding-source, GPL-compliance or reproducibility claim is made. Fifteen unrelated raw vendor fixture files are excluded from the clean project-source replacement. BeagleBone S19j Pro has a separate retained legal inventory:199 of279 records supplied,79 unmatched and1 restricted input withheld. External AM335x boot assets remain separate unidentified prerequisites. The six retained source bundles describe the previous publication scope; they do not establish complete source coverage for the nine additional Amlogic packages, whose legal inventory and vendor/dependency closure remain unassessed.

Current source delivery manifest

Voluntary support and donation controls

October default configuration disables donations at 0%; retained miner settings may differ. The optional contribution redirects scheduled mining time in Stratum V1, with 0–5% configured. Set it to 0 or disable it to opt out; saved changes require a daemon restart. Accepted shares and payout percentages are not guaranteed. Settings → Donation Fee displays the pool and worker; API/TOML configuration is available.

Downloads remain free. Follow the exact control-board and recovery route before any hardware work. If this release record helps you, choose an optional contribution to continued development. Contributing does not unlock firmware, change installation eligibility or require enabling the miner's donation setting.

Preserve original filenames and adjacent signed sidecars. Standardized release labels identify models; they do not replace the signed original filenames. Each native SD image is an exact-board removable-media payload and does not authorize NAND installation.

Exact-board file set

Antminer S9 — am1-s9

First-install archive; package does not authorize self-update

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL1_S9_beta20261002.tar.

Choose this only for a confirmed first-install route. This archive is not an SD image and advertises no self-update. Keep an exact-unit full backup and verified restore preparation; if Toolbox cannot name a runnable source-firmware route, retain existing firmware.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sysupgrade-118.tar
    Bytes and SHA-25620602880 bytesaae398f4c36e76df3737185a0493cb83d5854a827bdd577cd4f8ffe272f4180b
  2. dcentos-sysupgrade-118.tar.sig
    Bytes and SHA-25664 bytes5ef769c4895e15025515fa05ae2fc173fda0ccd721a519f1424b766b356520ff
  3. dcentos-sysupgrade-118.tar.runtime-image.json
    Bytes and SHA-256340 bytes04160ea0bbd6cd125175b4736429b907711a0db201503e5d578451aa56bc5206
  4. dcentos-sysupgrade-118.tar.runtime-image.sig
    Bytes and SHA-25664 bytes95e96a24c064e9282e09618b36add9b0ee79f5b5a9567faad569204cfa04c148
  5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: First-install-only archive for the exact S9 controller and confirmed source-firmware route. Self-update is deferred for this package. Keep a complete backup off-device, an exact recovery route and verified restore preparation. No automatic rollback or physical qualification is established.

Recovery: Persistent recovery requires saved full backup and exact controller recovery instructions. Automatic failed-boot rollback is not guaranteed. Keep serial/SD recovery available where required by the selected route; no published current-artifact hardware recovery proof is claimed.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-sysupgrade-118.tar
sha256sum dcentos-sysupgrade-118.tar.sig
sha256sum dcentos-sysupgrade-118.tar.runtime-image.json
sha256sum dcentos-sysupgrade-118.tar.runtime-image.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-118.tar -sigfile dcentos-sysupgrade-118.tar.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-118.tar.runtime-image.json -sigfile dcentos-sysupgrade-118.tar.runtime-image.sig

Exact-board file set

Antminer S19jPro — am2-s19j

Existing matching DCENT_OS update; no stock first-install

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL3_S19jPro_beta20261002.tar.

Already running DCENT_OS on am2-s19j? This is a guarded inactive-slot update. The running firmware must already accept this development authority; host verification does not change miner trust. Stock Bitmain, Braiins and VNish first installation require a different supported route. Keep a full exact-unit backup and verified restore preparation off the miner.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sysupgrade-am2-s19jpro.tar
    Bytes and SHA-25624709120 bytes743be38fddf3677dc530fe369a09f468ccdfc7cc621e2629773c650f9d35cca2
  2. dcentos-sysupgrade-am2-s19jpro.tar.sig
    Bytes and SHA-25664 bytesaa8ac3f90ca94a70554345c86dbb02bee46a364c0640c9f6e3552fa886d18e97
  3. dcentos-sysupgrade-am2-s19jpro.tar.runtime-image.json
    Bytes and SHA-256342 bytesdaf667517fdc896fe7531795f33eee407e0b138299a360bcc775fd900577aa80
  4. dcentos-sysupgrade-am2-s19jpro.tar.runtime-image.sig
    Bytes and SHA-25664 bytesf460457d1ab47ced0124fb22f69f459b9db561d1a7f16d3c6c0dcd859be6151a
  5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Requires an already-running matching DCENT_OS runtime that admits the signing authority and the exact authorized storage/update route. It is not stock-firmware first installation. Retain full backup, readback, console and exact recovery media; no automatic rollback is established.

Recovery: Keep full backup and exact board recovery media off miner. Follow completed write/readback and route power-cycle prompt; upload acceptance is not boot proof and route does not guarantee automatic reboot. No assumed auto-revert; use saved exact recovery procedure, never raw guessed boot environment writes.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-sysupgrade-am2-s19jpro.tar
sha256sum dcentos-sysupgrade-am2-s19jpro.tar.sig
sha256sum dcentos-sysupgrade-am2-s19jpro.tar.runtime-image.json
sha256sum dcentos-sysupgrade-am2-s19jpro.tar.runtime-image.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am2-s19jpro.tar -sigfile dcentos-sysupgrade-am2-s19jpro.tar.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am2-s19jpro.tar.runtime-image.json -sigfile dcentos-sysupgrade-am2-s19jpro.tar.runtime-image.sig

Exact-board file set

Antminer S9i — am1-s9i

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL1_S9i_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-sd.img.sig, dcentos-sd.img.manifest.json, dcentos-sd.img.runtime-image.json and dcentos-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sd.img
    Bytes and SHA-256168820736 bytesc7e9dd669770aa4a976879544f6a39d5907fa5245470804763c7a6ee24a45754
  2. dcentos-sd.img.sig
    Bytes and SHA-25664 bytese7b9c59c03183ff4d26bf540aea26082056496817a169acac7c308acec67b813
  3. dcentos-sd.img.manifest.json
    Bytes and SHA-2561910 bytes3575118ba2badb45f39ab083b636c6cf0b8fa0700be94480f44249561cabfb5a
  4. dcentos-sd.img.runtime-image.json
    Bytes and SHA-256341 bytes761fe2628688ad6c2f1987b680850c44542d581cd536e6ec0dc7958407328348
  5. dcentos-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytes0da04ec1f1e7f1decd3434f2fe5814e150cf73874cd4e17e63dc16f2abe69fee
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256471 bytes50b7386cf533540e1a244486efd0e9737a177a9423d1192514371d0dc936e6c7
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-sd.img
sha256sum dcentos-sd.img.sig
sha256sum dcentos-sd.img.manifest.json
sha256sum dcentos-sd.img.runtime-image.json
sha256sum dcentos-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img -sigfile dcentos-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img.runtime-image.json -sigfile dcentos-sd.img.runtime-image.sig

Exact-board file set

Antminer S9j — am1-s9j

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL1_S9j_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-sd.img.sig, dcentos-sd.img.manifest.json, dcentos-sd.img.runtime-image.json and dcentos-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sd.img
    Bytes and SHA-256168820736 bytesb0c4c179c9de5ebc62be97f4733e79b2a6532544c2bd63970805bf551c3a4eae
  2. dcentos-sd.img.sig
    Bytes and SHA-25664 bytes550b9ad09c53092615168cd5868a91f3318a25c36af07b466454319edf4b1c3e
  3. dcentos-sd.img.manifest.json
    Bytes and SHA-2561910 bytes28244d899f549939e5187f3c54bcdfa7e4c3562e969372aefd83dc08fba15ff6
  4. dcentos-sd.img.runtime-image.json
    Bytes and SHA-256341 bytesdbc7098d79e7f1623b00df1bd8b7a29fe3076161e84afba93fd747870d43fd8e
  5. dcentos-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytesb5d88e352caac26eb6423b42d34a4cd55d83d51e059af1f179b63f01238c0291
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256471 bytes9aa6e0870bab5d23aa7e1a1a5a05fb62d73231ba466e5b4211e59147e1501074
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-sd.img
sha256sum dcentos-sd.img.sig
sha256sum dcentos-sd.img.manifest.json
sha256sum dcentos-sd.img.runtime-image.json
sha256sum dcentos-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img -sigfile dcentos-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img.runtime-image.json -sigfile dcentos-sd.img.runtime-image.sig

Exact-board file set

Antminer S9SE — am1-s9se

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL1_S9SE_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-sd.img.sig, dcentos-sd.img.manifest.json, dcentos-sd.img.runtime-image.json and dcentos-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sd.img
    Bytes and SHA-256269484032 bytes160e808609e9dbac9368621aafc4fa0e89c410bd09a07c5675c7abc40c6a0370
  2. dcentos-sd.img.sig
    Bytes and SHA-25664 bytes6fbc7551b681a6a148de6bfb454638c5c605dc467cc200ab6e9f2c5c55223823
  3. dcentos-sd.img.manifest.json
    Bytes and SHA-2562014 bytesa994f2590dfe18b44cc168d31c8636e7cfd6a5467044e2465a417daba6189001
  4. dcentos-sd.img.runtime-image.json
    Bytes and SHA-256342 byteseab6e51badc4cebda01820c33b7ec51e5618ec6837e6439b0a973cf3bc1aaf6b
  5. dcentos-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytesf5c618d710682fe9d2e36b2179940e32936abaf35a7f7d00745a4017f4c2be39
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256472 bytes877fc138c139f1519c425439e10d4d4ef5564eb222599e79ab086dc76f3506a6
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-sd.img
sha256sum dcentos-sd.img.sig
sha256sum dcentos-sd.img.manifest.json
sha256sum dcentos-sd.img.runtime-image.json
sha256sum dcentos-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img -sigfile dcentos-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img.runtime-image.json -sigfile dcentos-sd.img.runtime-image.sig

Exact-board file set

Antminer S9k — am1-s9k

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL1_S9k_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-sd.img.sig, dcentos-sd.img.manifest.json, dcentos-sd.img.runtime-image.json and dcentos-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sd.img
    Bytes and SHA-256269484032 bytes0df0a7603d0ca429f78acb3c0507cd2c33dc3f72de16a82dd24cb22eee79df84
  2. dcentos-sd.img.sig
    Bytes and SHA-25664 bytes6aef131bc5e03211013b9c6908594910351db2f203c30492e9f68993b76a5d34
  3. dcentos-sd.img.manifest.json
    Bytes and SHA-2562012 bytes25de444acf9fedb8bf9a8fe33a902e2e833bcc68afc2ed265553e6ec405f7f9e
  4. dcentos-sd.img.runtime-image.json
    Bytes and SHA-256341 bytesc9163d8fa257b8fc7b22729abca84d4a0a1b10069c78c1cabc8cc5168edbcb0a
  5. dcentos-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytesbb26cd3844db83bf14c33e4db40a53ee5b8e57d6819a35a2abda6711872f92cc
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256471 bytesc5dbe7e4e708685b8f77f0fcee40c1df7751c315be62b1bd838ede242cb287e3
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-sd.img
sha256sum dcentos-sd.img.sig
sha256sum dcentos-sd.img.manifest.json
sha256sum dcentos-sd.img.runtime-image.json
sha256sum dcentos-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img -sigfile dcentos-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img.runtime-image.json -sigfile dcentos-sd.img.runtime-image.sig

Exact-board file set

Antminer S15 — am1-s15

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL1_S15_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-sd.img.sig, dcentos-sd.img.manifest.json, dcentos-sd.img.runtime-image.json and dcentos-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sd.img
    Bytes and SHA-256269484032 bytes06d2fab0a0d5e849ba728f335826b835af39bee4e76e6c3517d113118d046991
  2. dcentos-sd.img.sig
    Bytes and SHA-25664 bytes2be17960c794af8d6e3651d9bd0523959d25f8fbca33f3bdde84f32a7df2a002
  3. dcentos-sd.img.manifest.json
    Bytes and SHA-2562018 bytes1df3205e1e48d2b8e1c81df03cb5e145a513604aabea38cfa4d066ef997cbb64
  4. dcentos-sd.img.runtime-image.json
    Bytes and SHA-256341 bytescccebe4a283cb35669dca5d45211f5c34d91f4bf27522cb1cd557c31013adf21
  5. dcentos-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytes4b95d7623ec53905b3bec3c36615c93dd98b576e32b6dcd0ae5e87ce8188c0aa
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256471 bytes6cb0c1781991d5ee8eecd63a5d02dbf34f9ff684a51b2a6cdf0b4bf028980bb3
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-sd.img
sha256sum dcentos-sd.img.sig
sha256sum dcentos-sd.img.manifest.json
sha256sum dcentos-sd.img.runtime-image.json
sha256sum dcentos-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img -sigfile dcentos-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img.runtime-image.json -sigfile dcentos-sd.img.runtime-image.sig

Exact-board file set

Antminer T15 — am1-t15

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL1_T15_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-sd.img.sig, dcentos-sd.img.manifest.json, dcentos-sd.img.runtime-image.json and dcentos-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sd.img
    Bytes and SHA-256269484032 bytes3976f7d59ecc95a45d72a4033add6bbc1b9337953d505e307f1c04167c6787f9
  2. dcentos-sd.img.sig
    Bytes and SHA-25664 bytesecdb96d79277259e8b21add705d79c91dbdc388182e83ae6114f93181f5c35f4
  3. dcentos-sd.img.manifest.json
    Bytes and SHA-2562018 bytesee76b561d290e4b48f6c7132bcaaa5b31368298a4b8e2ba13f1b6a69340b0d1f
  4. dcentos-sd.img.runtime-image.json
    Bytes and SHA-256341 bytesd0f3720f9136ae21aafa982a679c861acd17d8b4c2b03564bf5398899298df06
  5. dcentos-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytesa26e8aea4571e9ac4e92241f720e74836d60650671b9f92db40fe45b68205541
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256471 bytes8c9c5aad9a15e652206792f910b86834fe2ef96ffb9dfb1b2824bfb5d8297fb9
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-sd.img
sha256sum dcentos-sd.img.sig
sha256sum dcentos-sd.img.manifest.json
sha256sum dcentos-sd.img.runtime-image.json
sha256sum dcentos-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img -sigfile dcentos-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img.runtime-image.json -sigfile dcentos-sd.img.runtime-image.sig

Exact-board file set

Antminer S17 — am2-s17p

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL2_S17_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-s17pro-sd.img.sig, dcentos-s17pro-sd.img.manifest.json, dcentos-s17pro-sd.img.runtime-image.json and dcentos-s17pro-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-s17pro-sd.img
    Bytes and SHA-256219152384 bytes90ef9c1e17f2e25a16d48c0c0258f4842eaa9ed0d5183a86a13e63f32ce5c61f
  2. dcentos-s17pro-sd.img.sig
    Bytes and SHA-25664 bytes67178f4cd8ad9cdd51ea7976a230ef7e06cbb4aab6c339a946ce84fbd3d215d7
  3. dcentos-s17pro-sd.img.manifest.json
    Bytes and SHA-2562501 bytes8b4b69d9d57936d1e96fe48b7317ff323076bb62d25639a3a72da3f749eb5024
  4. dcentos-s17pro-sd.img.runtime-image.json
    Bytes and SHA-256342 bytes3bebd289182eee647a1cc3448a86aecf1b9fdd3be1d8e471a5e0b2e769f40124
  5. dcentos-s17pro-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytese590935b498ad2f053d17b6e309c71e232f5426c65ffa045096791c749f555eb
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256472 bytes735b3d579ab3a22cedacfb96a3e4154da52ea36761d59dac0c74f1b95ec84b92
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

This release card covers S17 only. The original producer filename does not extend this card to S17 Pro.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-s17pro-sd.img
sha256sum dcentos-s17pro-sd.img.sig
sha256sum dcentos-s17pro-sd.img.manifest.json
sha256sum dcentos-s17pro-sd.img.runtime-image.json
sha256sum dcentos-s17pro-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s17pro-sd.img -sigfile dcentos-s17pro-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s17pro-sd.img.runtime-image.json -sigfile dcentos-s17pro-sd.img.runtime-image.sig

Exact-board file set

Antminer S17Plus — am2-s17plus

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL2_S17Plus_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-s17plus-sd.img.sig, dcentos-s17plus-sd.img.manifest.json, dcentos-s17plus-sd.img.runtime-image.json and dcentos-s17plus-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-s17plus-sd.img
    Bytes and SHA-256219152384 bytesfe81010dec603ea46c18cfbb8857a9d308d3e567fc366f62fbfc56a359892cd7
  2. dcentos-s17plus-sd.img.sig
    Bytes and SHA-25664 bytes0e67c00113e86b6d05f2fd942d2d71ca790818f213bc69ec7b646ea101fc7732
  3. dcentos-s17plus-sd.img.manifest.json
    Bytes and SHA-2562508 bytes8b64e1a0dc9d88ff59da023d6a493acb9c593c9b93336aae4095b806c3bfc2ea
  4. dcentos-s17plus-sd.img.runtime-image.json
    Bytes and SHA-256345 bytesc4c9cbbc2fe27bed748026e2b7538059cfa79fed9988cedcf6912a4793db5f59
  5. dcentos-s17plus-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytesf39f735f753f3cca2d268cecf79ba1811c639f7e06cd8c64556027d0ee86ed75
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256475 bytes6327b42771a5da44964b5a5c593e890dac93f3bf741132f1ea66daf0644b8745
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-s17plus-sd.img
sha256sum dcentos-s17plus-sd.img.sig
sha256sum dcentos-s17plus-sd.img.manifest.json
sha256sum dcentos-s17plus-sd.img.runtime-image.json
sha256sum dcentos-s17plus-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s17plus-sd.img -sigfile dcentos-s17plus-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s17plus-sd.img.runtime-image.json -sigfile dcentos-s17plus-sd.img.runtime-image.sig

Exact-board file set

Antminer T17 — am2-t17

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL2_T17_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-t17-sd.img.sig, dcentos-t17-sd.img.manifest.json, dcentos-t17-sd.img.runtime-image.json and dcentos-t17-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-t17-sd.img
    Bytes and SHA-256219152384 bytes528e32a9cea6eb0920edd6076c93d9fe52ccedd2cc52ce6330e8e0c3588b8900
  2. dcentos-t17-sd.img.sig
    Bytes and SHA-25664 bytesc0fbb82bb2a0c4469ad5209cc3451191a57fac38c863c5717713626e6eca17fe
  3. dcentos-t17-sd.img.manifest.json
    Bytes and SHA-2562496 bytes4f1eeae898defbaa4822d0e897533cf5666297ae79400d124abacd5611ad0d22
  4. dcentos-t17-sd.img.runtime-image.json
    Bytes and SHA-256341 bytesaf914a84be34ad72f292043d335134a592c38f76069fd2403dc1df1383500c09
  5. dcentos-t17-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytese94d86cf908d7255093557a70957c1dfa2950a29277c194e87aba2737343b782
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256471 bytes6c203d1c85fcf43153d6ed20675e62ecfb2d2a217d410266ec82e9820526b4e9
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-t17-sd.img
sha256sum dcentos-t17-sd.img.sig
sha256sum dcentos-t17-sd.img.manifest.json
sha256sum dcentos-t17-sd.img.runtime-image.json
sha256sum dcentos-t17-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-t17-sd.img -sigfile dcentos-t17-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-t17-sd.img.runtime-image.json -sigfile dcentos-t17-sd.img.runtime-image.sig

Exact-board file set

Antminer T17Plus — am2-t17plus

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL2_T17Plus_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-t17plus-sd.img.sig, dcentos-t17plus-sd.img.manifest.json, dcentos-t17plus-sd.img.runtime-image.json and dcentos-t17plus-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-t17plus-sd.img
    Bytes and SHA-256219152384 bytesc66fbbfe010f0b0201be6c327339082a7b6ea2273a4b0ccf12b0256120221372
  2. dcentos-t17plus-sd.img.sig
    Bytes and SHA-25664 bytes48bd873b10bc2ce2f2db81978fc072d9c7e940a143a9540e2aae618bd69281af
  3. dcentos-t17plus-sd.img.manifest.json
    Bytes and SHA-2562508 bytes15a94b7012171abe71e98a429bfb6bf8d43858df2f5e796d9373f335b558172a
  4. dcentos-t17plus-sd.img.runtime-image.json
    Bytes and SHA-256345 bytes948acbeeeb8ef2b1ea50f157b567f2a7773c14deacbfbf0e5f09915a55049e22
  5. dcentos-t17plus-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytes08391a5201b93a993ac52d2a26fcdf340ab7cf1fa5d746544ea4972438641c92
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256475 bytesf1c4c42daed6e19c8dd54fc1b066501ecccb85d041e4d4b4d2aae3651c82b59a
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-t17plus-sd.img
sha256sum dcentos-t17plus-sd.img.sig
sha256sum dcentos-t17plus-sd.img.manifest.json
sha256sum dcentos-t17plus-sd.img.runtime-image.json
sha256sum dcentos-t17plus-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-t17plus-sd.img -sigfile dcentos-t17plus-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-t17plus-sd.img.runtime-image.json -sigfile dcentos-t17plus-sd.img.runtime-image.sig

Exact-board file set

Antminer S19Pro — am2-s19pro

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL3_S19Pro_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-s19pro-sd.img.sig, dcentos-s19pro-sd.img.manifest.json, dcentos-s19pro-sd.img.runtime-image.json and dcentos-s19pro-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-s19pro-sd.img
    Bytes and SHA-256219152384 bytes3e487b7b1aba93a9a38940aa82bbeeb4d6b0a175e506311faf79766855307b57
  2. dcentos-s19pro-sd.img.sig
    Bytes and SHA-25664 bytes066a663761b40555b436b2760b6d98816c01a197720e9f0c787b973acf04c1b9
  3. dcentos-s19pro-sd.img.manifest.json
    Bytes and SHA-2562505 bytes0ca54c31696572e4b640d878363625ae24ce6749755b0c32c9d2eeff3c1ce0ed
  4. dcentos-s19pro-sd.img.runtime-image.json
    Bytes and SHA-256344 bytes3668570e913fc9b92d7eb163c9746271561d7514e225716993da6c204c2f1437
  5. dcentos-s19pro-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytes8acc32ae38831b21fcde8e4ff1bb1a07dcb58dc3f9a75f1be4841f9b4af1b5d3
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256474 bytes5438d16c1bcf7d4e7b3e5aa071218c466b60ef7e586a94ae9385a65ecfd9dc03
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-s19pro-sd.img
sha256sum dcentos-s19pro-sd.img.sig
sha256sum dcentos-s19pro-sd.img.manifest.json
sha256sum dcentos-s19pro-sd.img.runtime-image.json
sha256sum dcentos-s19pro-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s19pro-sd.img -sigfile dcentos-s19pro-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s19pro-sd.img.runtime-image.json -sigfile dcentos-s19pro-sd.img.runtime-image.sig

Exact-board file set

Antminer S19 — am2-s19

Inspection download; SD boot route held by policy conflict

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL3_S19_beta20261002.img.

Inspection only. Do not prepare boot media, install or update from this card. Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-s19-sd.img
    Bytes and SHA-256219152384 bytes70d1dd9ec670d1586cf585fe05f2ce639b5ac5f8835dcaec7dd6ec21b5ca302b
  2. dcentos-s19-sd.img.sig
    Bytes and SHA-25664 bytescdb84157807c348c18701f23a46d0758701f201558ee22b117db6adee1bc06b7
  3. dcentos-s19-sd.img.manifest.json
    Bytes and SHA-2562496 bytes500c2cfd9329fde7ad82e2ab50e14156ec2f68aa5c18123c10a8f36afbfa28b3
  4. dcentos-s19-sd.img.runtime-image.json
    Bytes and SHA-256341 bytesfb31b71430ace05ea01c954b9caedb5c260f281cdb330ab8cae228d758a151cb
  5. dcentos-s19-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytesd4e63991c459a46959e440bd366de07249d4517031c2adba165866dc07f21987
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256471 bytes709e6131002ff925f9f207ea0eebca0c2683b16dfcb027984d30fc25bd75b925
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-s19-sd.img
sha256sum dcentos-s19-sd.img.sig
sha256sum dcentos-s19-sd.img.manifest.json
sha256sum dcentos-s19-sd.img.runtime-image.json
sha256sum dcentos-s19-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s19-sd.img -sigfile dcentos-s19-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s19-sd.img.runtime-image.json -sigfile dcentos-s19-sd.img.runtime-image.sig

Exact-board file set

Antminer T19 — am2-t19

Inspection download; SD boot route held by policy conflict

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL3_T19_beta20261002.img.

Inspection only. Do not prepare boot media, install or update from this card. Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-t19-sd.img
    Bytes and SHA-256219152384 bytes5da1e10271f5e7e9ecf412f26eef223f71a6249f9137bbb6e0a1607775297b91
  2. dcentos-t19-sd.img.sig
    Bytes and SHA-25664 bytesb40a1d9eb553e9c1cece73294447d669c37b176efc6f1047553b6c2bee57ef6a
  3. dcentos-t19-sd.img.manifest.json
    Bytes and SHA-2562496 bytes0693c154a1da18882cbfd045b262f4f335fd2cdcf4093bbfe2ab757b2f9347e3
  4. dcentos-t19-sd.img.runtime-image.json
    Bytes and SHA-256341 bytesb4684d323af468ef770a6a3c1325c9ddaf071ff18a740a09f9436a148f0225b5
  5. dcentos-t19-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytesf0617e88d0f4d65e1be0b2fa70ee97692bf0b042b8b0ad0ce100298af093be7e
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256471 bytesffa915ea078baed78e7811a77e4ef5e3a81af33802e858dda61281301c9bb138
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-t19-sd.img
sha256sum dcentos-t19-sd.img.sig
sha256sum dcentos-t19-sd.img.manifest.json
sha256sum dcentos-t19-sd.img.runtime-image.json
sha256sum dcentos-t19-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-t19-sd.img -sigfile dcentos-t19-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-t19-sd.img.runtime-image.json -sigfile dcentos-t19-sd.img.runtime-image.sig

Exact-board file set

Antminer S19a — am2-s19a

Inspection download; SD boot route held by policy conflict

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL3_S19a_beta20261002.img.

Inspection only. Do not prepare boot media, install or update from this card. Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-s19a-sd.img
    Bytes and SHA-256219152384 bytes7fca552e34546162b808235fcca0020d1d222870384de47f092dec9ec5fad59e
  2. dcentos-s19a-sd.img.sig
    Bytes and SHA-25664 bytes31dd15b51444dc998cdddf4aab484da5627a23848dbb048cf2fda2b507c0872d
  3. dcentos-s19a-sd.img.manifest.json
    Bytes and SHA-2562499 bytes3cba06bbf50823c096ca3349620563e7432c5588a9978be1830b49e42930ba42
  4. dcentos-s19a-sd.img.runtime-image.json
    Bytes and SHA-256342 bytesdd70badca87b5501b6d00d2ae6969b4bb1cf0fa6991497258b05862629726a65
  5. dcentos-s19a-sd.img.runtime-image.sig
    Bytes and SHA-25664 byteseed4ca0b076c494b8a48b44ef6914abb232910e07e38708ff5d843d589681e7a
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256472 bytesd63cddd44f0a4310ab429ed099ec552dcef6eca8b272a69bdd24445cc2df53a3
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-s19a-sd.img
sha256sum dcentos-s19a-sd.img.sig
sha256sum dcentos-s19a-sd.img.manifest.json
sha256sum dcentos-s19a-sd.img.runtime-image.json
sha256sum dcentos-s19a-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s19a-sd.img -sigfile dcentos-s19a-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s19a-sd.img.runtime-image.json -sigfile dcentos-s19a-sd.img.runtime-image.sig

Exact-board file set

Antminer S19Plus — am2-s19plus

Inspection download; SD boot route held by policy conflict

Experimental; physical qualification pending. Zynq/Xilinx. Intended release label: DCENTOS_XIL3_S19Plus_beta20261002.img.

Inspection only. Do not prepare boot media, install or update from this card. Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-s19plus-sd.img
    Bytes and SHA-256219152384 bytes479ef5fca2ce6b5c9ac6bb76b37bedfc1d2133ecf7dea2a2c6bc6e9c6d6feade
  2. dcentos-s19plus-sd.img.sig
    Bytes and SHA-25664 bytes44874135b926e7221a1cc054bcb99b347a65cc6fa6cf94ee2638a7b376c47b39
  3. dcentos-s19plus-sd.img.manifest.json
    Bytes and SHA-2562508 bytesa23ed8240e6d77c11a27f07ce53d656ee9be334c1bbe961a01d36cf6a92a3d0a
  4. dcentos-s19plus-sd.img.runtime-image.json
    Bytes and SHA-256345 bytes6a1ca91d3d384d242cca20864a157f123dbcb98a7c4d744cd9d0a10b20cb4d81
  5. dcentos-s19plus-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytesfbced58c1fdb081a17ef34b39a2df38e684470e8d33aea385071b48ee634dd6d
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256475 bytesbb50abb89513750290341e4f2f27a18f4f3d88fce99b679ee2ec98e0f905bed6
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

Recovery: After completed Stop/shutdown, power off, remove SD and restore recorded original boot selection to return to internal firmware. Preserve failed-boot card and diagnostics. Do not assume this trial is qualified recovery media.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-s19plus-sd.img
sha256sum dcentos-s19plus-sd.img.sig
sha256sum dcentos-s19plus-sd.img.manifest.json
sha256sum dcentos-s19plus-sd.img.runtime-image.json
sha256sum dcentos-s19plus-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s19plus-sd.img -sigfile dcentos-s19plus-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-s19plus-sd.img.runtime-image.json -sigfile dcentos-s19plus-sd.img.runtime-image.sig

Exact-board file set

Antminer T17e — am2-t17e

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Xilinx; exact BM1396 native-SD media contract. Intended release label: DCENTOS_XIL2_T17e_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-sd.img.sig, dcentos-sd.img.manifest.json, dcentos-sd.img.runtime-image.json and dcentos-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sd.img
    Bytes and SHA-256269484032 byteseade6abb68ab80b5bc75190b6da234b7afe553d3fabb8793d55f04794f890532
  2. dcentos-sd.img.sig
    Bytes and SHA-25664 bytesaf4f9a6e53ee030c97a0c3e1877d79ca3bb1c627c7a7c1f12e01d116ba0e9637
  3. dcentos-sd.img.manifest.json
    Bytes and SHA-2561982 bytes1dbda06fd0c14ae459106d92264dc3f235832e35df2e090f2c7c079ccd8ef588
  4. dcentos-sd.img.runtime-image.json
    Bytes and SHA-256342 bytes73534dc32484dd87358a8f61017e5e1ec9e16b696fa12e3b7a26c95204b29ea2
  5. dcentos-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytes73c9be9a237ace3e2121ce6313266b6002b95df77f68883875469f135a2e3f30
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256350 bytesbb8b1945526fb500cea26f8b9f87e8edef95912adae252db25bdbb6e8eed2f5e
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: For a normally operating trial, complete Stop/shutdown, disconnect power, remove the card and restore original boot selection if changed. Follow exact controller instructions; no jumper position is inferred. Preserve failed-boot media and diagnostics; no current-artifact recovery qualification claimed.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-sd.img
sha256sum dcentos-sd.img.sig
sha256sum dcentos-sd.img.manifest.json
sha256sum dcentos-sd.img.runtime-image.json
sha256sum dcentos-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img -sigfile dcentos-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img.runtime-image.json -sigfile dcentos-sd.img.runtime-image.sig

Exact-board file set

Antminer S17e — am2-s17e

Exact-board SD trial for authorized lab use; card stays inserted; no NAND writes

Experimental; physical qualification pending. Xilinx; exact BM1396 native-SD media contract. Intended release label: DCENTOS_XIL2_S17e_beta20261002.img.

Before an authorized exact-board lab SD trial

  1. Download this image and all four media/runtime companions plus the tester notes into one model-specific folder, preserving their names: dcentos-sd.img.sig, dcentos-sd.img.manifest.json, dcentos-sd.img.runtime-image.json and dcentos-sd.img.runtime-image.sig.
  2. Run this card's complete read-only verification using the announced development public key. A checksum checks bytes; it does not authenticate the package.
  3. Proceed only under a separately authorized exact-board lab workflow. Review this exact controller's SD boot-selection and recovery instructions; record its original boot selection. Preparing an image erases the selected card, so identify the removable device before writing.

Download the tester notes through EXPERIMENTAL-GUIDE.txt and save them as TESTER_README.txt in this same folder. Keep the SD card inserted during the trial. This does not install to NAND. For recovery, complete Stop/shutdown, power off, remove SD and restore the original boot selection. Physical qualification remains pending.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sd.img
    Bytes and SHA-256269484032 bytesc5b4791f89562359acede59680b2a8b642901d20cc6b2dbdb15cb2e888ae88b5
  2. dcentos-sd.img.sig
    Bytes and SHA-25664 bytesf4a493866c86c6fbfd77baf17b99484e6b78387a47f67636473a075fa67299a9
  3. dcentos-sd.img.manifest.json
    Bytes and SHA-2561982 bytes3f74df43471636d4a20a23736cb32e8271453c460bb8b18c04be55481ca068ce
  4. dcentos-sd.img.runtime-image.json
    Bytes and SHA-256342 bytesf50fc0d920312542c9b4a66d576832935d80e627a01917bab4d89b2c2c7d4fcf
  5. dcentos-sd.img.runtime-image.sig
    Bytes and SHA-25664 bytes4ac0ee626f6c64cb92a247358432c003c6bbcbe713de7e09bfc0f719f7d8a540
  6. TESTER_README.txtTester notes — save as TESTER_README.txt
    Bytes and SHA-256350 bytes3fe04aee099a139689acc8717c43a1485234a7ec274f632724a9ab464c1ab2fe
  7. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: Only a separately authorized exact-board lab trial may prepare this raw image and verify readback. Keep the card inserted during use. Follow supplied controller-specific boot selection, preserve the original state and complete shutdown before removal. This package authorizes no NAND write.

Recovery: For a normally operating trial, complete Stop/shutdown, disconnect power, remove the card and restore original boot selection if changed. Follow exact controller instructions; no jumper position is inferred. Preserve failed-boot media and diagnostics; no current-artifact recovery qualification claimed.

Pending; no current-artifact cold boot, accepted shares, endurance or recovery qualification claimed

Optional evidence and additional release records
Read-only verification for this exact file set

Download the matching artifact set and public key, preserving all names. The TESTER_README.txt link is served through a byte-identical EXPERIMENTAL-GUIDE.txt alias; save it locally as TESTER_README.txt. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

# Read-only host checks. Match the independently announced public-key identity first.
sha256sum approved-development-release.pub.pem
# Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
sha256sum dcentos-sd.img
sha256sum dcentos-sd.img.sig
sha256sum dcentos-sd.img.manifest.json
sha256sum dcentos-sd.img.runtime-image.json
sha256sum dcentos-sd.img.runtime-image.sig
sha256sum TESTER_README.txt
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img -sigfile dcentos-sd.img.sig
openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sd.img.runtime-image.json -sigfile dcentos-sd.img.runtime-image.sig

Exact-board file set

Antminer S19k Pro — am3-s19k

Exact authorized lab workflow only; no general or stock installation

Experimental; physical qualification pending. Amlogic; exact controller/model prerequisites required. Intended release label: dcentos-sysupgrade-am3-s19kpro.tar.

Separately authorized host-driven exact-board lab workflow only. This is a host-driven single-slot rootfs-window lab package, with target-side sysupgrade disabled. It is not an A/B update, raw SD image or stock first-install route. Use only a separately authorized exact-controller lab workflow with a verified full restore directory, backup and recovery preparation; no runnable consumer command is supplied here. No consumer installation command is supplied.

Complete required file set

Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

  1. dcentos-sysupgrade-am3-s19kpro.tar
    Bytes and SHA-25643079680 bytes6367e31f8793c683a1c463704765230ba4a06d2941ccdef75e6080d369dd884a
  2. dcentos-sysupgrade-am3-s19kpro.tar.sig
    Bytes and SHA-25664 bytesfb3382058627814405097181db10aab47a795261acd9ac3638972b9f587800ff
  3. dcentos-sysupgrade-am3-s19kpro.tar.runtime-image.json
    Bytes and SHA-256342 bytesc1965afb5d31d856e7ab82c3db18cc518d846a77a027a9ee0400f19064ba9b33
  4. dcentos-sysupgrade-am3-s19kpro.tar.runtime-image.sig
    Bytes and SHA-25664 bytes0582da50bcca1967722b3efc3db043da7161a2e55c56084779ec70c65e9436cd
  5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

Report an issue for this exact board

Installation boundary, recovery and qualification

Installation boundary: This is a host-driven single-slot rootfs-window lab package, with target-side sysupgrade disabled. It is not an A/B update, raw SD image or stock first-install route. Use only a separately authorized exact-controller lab workflow with a verified full restore directory, backup and recovery preparation; no runnable consumer command is supplied here.

Recovery: No automatic rollback or physical recovery qualification is established. Retain a full exact-unit backup and verified recovery preparation under a separately authorized lab workflow; otherwise keep existing firmware.

Physical qualification pending; signatures do not prove boot, accepted shares, thermal/endurance or recovery.

Optional evidence and additional release records
    Read-only verification for this exact file set

    Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

    # Read-only host checks. Match the independently announced public-key identity first.
    sha256sum approved-development-release.pub.pem
    # Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
    sha256sum dcentos-sysupgrade-am3-s19kpro.tar
    sha256sum dcentos-sysupgrade-am3-s19kpro.tar.sig
    sha256sum dcentos-sysupgrade-am3-s19kpro.tar.runtime-image.json
    sha256sum dcentos-sysupgrade-am3-s19kpro.tar.runtime-image.sig
    openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19kpro.tar -sigfile dcentos-sysupgrade-am3-s19kpro.tar.sig
    openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19kpro.tar.runtime-image.json -sigfile dcentos-sysupgrade-am3-s19kpro.tar.runtime-image.sig

    Exact-board file set

    Antminer S19 XP — am3-s19xp

    Inspection only; installation and update denied

    Experimental; physical qualification pending. Amlogic; exact controller/model prerequisites required. Intended release label: dcentos-sysupgrade-am3-s19xp.tar.

    Inspection only. Do not prepare boot media, install or update from this card. Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

    Complete required file set

    Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

    1. dcentos-sysupgrade-am3-s19xp.tar
      Bytes and SHA-25643100160 bytes8719743457c2a009849871d113a66ffcabf5485db9e2d1c315ea1e5ce17b8fb6
    2. dcentos-sysupgrade-am3-s19xp.tar.sig
      Bytes and SHA-25664 bytese0fc39099396d4c2d79669fb65b59381b5c0970ca76170c1fa377470b6972d46
    3. dcentos-sysupgrade-am3-s19xp.tar.runtime-image.json
      Bytes and SHA-256343 bytesd132b265c1a1e13460c9a1c81c4b549c3676840857aedba3189180dca6e6cb41
    4. dcentos-sysupgrade-am3-s19xp.tar.runtime-image.sig
      Bytes and SHA-25664 bytes4e6573e24c904332af86c2adda1fd3dae2338ed306e4a017480d7ada0922bc79
    5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
      PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

    Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

    Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

    Report an issue for this exact board

    Installation boundary, recovery and qualification

    Installation boundary: Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

    Recovery: No automatic rollback or physical recovery qualification is established. Retain a full exact-unit backup and verified recovery preparation under a separately authorized lab workflow; otherwise keep existing firmware.

    Physical qualification pending; signatures do not prove boot, accepted shares, thermal/endurance or recovery.

    Optional evidence and additional release records
      Read-only verification for this exact file set

      Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

      # Read-only host checks. Match the independently announced public-key identity first.
      sha256sum approved-development-release.pub.pem
      # Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
      sha256sum dcentos-sysupgrade-am3-s19xp.tar
      sha256sum dcentos-sysupgrade-am3-s19xp.tar.sig
      sha256sum dcentos-sysupgrade-am3-s19xp.tar.runtime-image.json
      sha256sum dcentos-sysupgrade-am3-s19xp.tar.runtime-image.sig
      openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19xp.tar -sigfile dcentos-sysupgrade-am3-s19xp.tar.sig
      openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19xp.tar.runtime-image.json -sigfile dcentos-sysupgrade-am3-s19xp.tar.runtime-image.sig

      Exact-board file set

      Antminer S19j XP — am3-s19jxp

      Inspection only; installation and update denied

      Experimental; physical qualification pending. Amlogic; exact controller/model prerequisites required. Intended release label: dcentos-sysupgrade-am3-s19jxp.tar.

      Inspection only. Do not prepare boot media, install or update from this card. Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

      Complete required file set

      Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

      1. dcentos-sysupgrade-am3-s19jxp.tar
        Bytes and SHA-25643100160 bytes6310003f9e8ccc142a8fdd07d1118029ec08bb87ac8b52bb8fa12e9d3fed4353
      2. dcentos-sysupgrade-am3-s19jxp.tar.sig
        Bytes and SHA-25664 bytesb5b46044f17fb02fa585dff2613482b626f010acf76401f02288310b81f81d2e
      3. dcentos-sysupgrade-am3-s19jxp.tar.runtime-image.json
        Bytes and SHA-256344 bytes4613622dbc7451673c0309cb447a3cc0865c4221b46264195ab6e7911b33a8e0
      4. dcentos-sysupgrade-am3-s19jxp.tar.runtime-image.sig
        Bytes and SHA-25664 bytes188f80f46a7bfec304e77650cbdec1440a0c4ab3b288145a793043bfeb175cec
      5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
        PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

      Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

      Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

      Report an issue for this exact board

      Installation boundary, recovery and qualification

      Installation boundary: Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

      Recovery: No automatic rollback or physical recovery qualification is established. Retain a full exact-unit backup and verified recovery preparation under a separately authorized lab workflow; otherwise keep existing firmware.

      Physical qualification pending; signatures do not prove boot, accepted shares, thermal/endurance or recovery.

      Optional evidence and additional release records
        Read-only verification for this exact file set

        Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

        # Read-only host checks. Match the independently announced public-key identity first.
        sha256sum approved-development-release.pub.pem
        # Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
        sha256sum dcentos-sysupgrade-am3-s19jxp.tar
        sha256sum dcentos-sysupgrade-am3-s19jxp.tar.sig
        sha256sum dcentos-sysupgrade-am3-s19jxp.tar.runtime-image.json
        sha256sum dcentos-sysupgrade-am3-s19jxp.tar.runtime-image.sig
        openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19jxp.tar -sigfile dcentos-sysupgrade-am3-s19jxp.tar.sig
        openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19jxp.tar.runtime-image.json -sigfile dcentos-sysupgrade-am3-s19jxp.tar.runtime-image.sig

        Exact-board file set

        Antminer S19j Pro A126 — am3-s19jproa

        Inspection only; installation and update denied

        Experimental; physical qualification pending. Amlogic; exact controller/model prerequisites required. Intended release label: dcentos-sysupgrade-am3-s19jproa.tar.

        Inspection only. Do not prepare boot media, install or update from this card. Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

        Complete required file set

        Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

        1. dcentos-sysupgrade-am3-s19jproa.tar
          Bytes and SHA-25643100160 bytes7d8e69ccb303bd1284e17f94d92e71184335553dddc09d57041305b310f6a288
        2. dcentos-sysupgrade-am3-s19jproa.tar.sig
          Bytes and SHA-25664 bytes1193bca61225414203e8b7290d36d7a6bb88f34797cd1accb902b44cae30340c
        3. dcentos-sysupgrade-am3-s19jproa.tar.runtime-image.json
          Bytes and SHA-256346 bytes6891d1fbea7e31fe13724d48af9be9a903cb69acd5710991b3df36e9c361304d
        4. dcentos-sysupgrade-am3-s19jproa.tar.runtime-image.sig
          Bytes and SHA-25664 bytes157f643bbe38d763a7a1acc455bd0c817eef02a253b4dc7db8c4c3d4041a6241
        5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
          PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

        Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

        Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

        Report an issue for this exact board

        Installation boundary, recovery and qualification

        Installation boundary: Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

        Recovery: No automatic rollback or physical recovery qualification is established. Retain a full exact-unit backup and verified recovery preparation under a separately authorized lab workflow; otherwise keep existing firmware.

        Physical qualification pending; signatures do not prove boot, accepted shares, thermal/endurance or recovery.

        Optional evidence and additional release records
          Read-only verification for this exact file set

          Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

          # Read-only host checks. Match the independently announced public-key identity first.
          sha256sum approved-development-release.pub.pem
          # Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
          sha256sum dcentos-sysupgrade-am3-s19jproa.tar
          sha256sum dcentos-sysupgrade-am3-s19jproa.tar.sig
          sha256sum dcentos-sysupgrade-am3-s19jproa.tar.runtime-image.json
          sha256sum dcentos-sysupgrade-am3-s19jproa.tar.runtime-image.sig
          openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19jproa.tar -sigfile dcentos-sysupgrade-am3-s19jproa.tar.sig
          openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19jproa.tar.runtime-image.json -sigfile dcentos-sysupgrade-am3-s19jproa.tar.runtime-image.sig

          Exact-board file set

          Antminer S19j Pro Plus 120 — am3-s19jproplus

          Inspection only; installation and update denied

          Experimental; physical qualification pending. Amlogic; exact controller/model prerequisites required. Intended release label: dcentos-sysupgrade-am3-s19jproplus.tar.

          Inspection only. Do not prepare boot media, install or update from this card. Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

          Complete required file set

          Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

          1. dcentos-sysupgrade-am3-s19jproplus.tar
            Bytes and SHA-25643100160 bytes619c389894f51da9d92e93a46bab1376cbe65ad67d708ef80a1a3be0b664aa0e
          2. dcentos-sysupgrade-am3-s19jproplus.tar.sig
            Bytes and SHA-25664 bytes8675bdc75338d7fcb3c650232e2c45daeb46b3bbb621aeda4137403d256dcff8
          3. dcentos-sysupgrade-am3-s19jproplus.tar.runtime-image.json
            Bytes and SHA-256349 bytese2857826d36b65b83cec15704aa1a24ee7d99506a8c3ca6b50750d13667a49a1
          4. dcentos-sysupgrade-am3-s19jproplus.tar.runtime-image.sig
            Bytes and SHA-25664 bytes5b44fe19f2e90cd9a4ad01b6be2a1b018ca68c39d55b52b2fed1d0798bb40880
          5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
            PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

          Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

          Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

          Report an issue for this exact board

          Installation boundary, recovery and qualification

          Installation boundary: Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

          Recovery: No automatic rollback or physical recovery qualification is established. Retain a full exact-unit backup and verified recovery preparation under a separately authorized lab workflow; otherwise keep existing firmware.

          Physical qualification pending; signatures do not prove boot, accepted shares, thermal/endurance or recovery.

          Optional evidence and additional release records
            Read-only verification for this exact file set

            Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

            # Read-only host checks. Match the independently announced public-key identity first.
            sha256sum approved-development-release.pub.pem
            # Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
            sha256sum dcentos-sysupgrade-am3-s19jproplus.tar
            sha256sum dcentos-sysupgrade-am3-s19jproplus.tar.sig
            sha256sum dcentos-sysupgrade-am3-s19jproplus.tar.runtime-image.json
            sha256sum dcentos-sysupgrade-am3-s19jproplus.tar.runtime-image.sig
            openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19jproplus.tar -sigfile dcentos-sysupgrade-am3-s19jproplus.tar.sig
            openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19jproplus.tar.runtime-image.json -sigfile dcentos-sysupgrade-am3-s19jproplus.tar.runtime-image.sig

            Exact-board file set

            Antminer S19j Pro Classic 126 — am3-s19jpro-aml

            Inspection only; installation and update denied

            Experimental; physical qualification pending. Amlogic; exact controller/model prerequisites required. Intended release label: dcentos-sysupgrade-am3-s19jpro-aml.tar.

            Inspection only. Do not prepare boot media, install or update from this card. Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

            Complete required file set

            Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

            1. dcentos-sysupgrade-am3-s19jpro-aml.tar
              Bytes and SHA-25643110400 bytesa10997950421bb8068e9f3082657906b3dd1650cb687f6d7db1478886df2b000
            2. dcentos-sysupgrade-am3-s19jpro-aml.tar.sig
              Bytes and SHA-25664 bytesf7fa40f65ef190246b3e9151360c33600d92e448fc0ff76e8c0b1826dd9c9539
            3. dcentos-sysupgrade-am3-s19jpro-aml.tar.runtime-image.json
              Bytes and SHA-256349 bytes6d06f5efc3573f3512a00b2a7d7cb095d93dfb75f136fd2d63298f74ef35e33c
            4. dcentos-sysupgrade-am3-s19jpro-aml.tar.runtime-image.sig
              Bytes and SHA-25664 bytes2ef988ac71d6263f6e3b92049392e9683d01c697fadca3def6ba0c1c8ddb5749
            5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
              PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

            Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

            Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

            Report an issue for this exact board

            Installation boundary, recovery and qualification

            Installation boundary: Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

            Recovery: No automatic rollback or physical recovery qualification is established. Retain a full exact-unit backup and verified recovery preparation under a separately authorized lab workflow; otherwise keep existing firmware.

            Physical qualification pending; signatures do not prove boot, accepted shares, thermal/endurance or recovery.

            Optional evidence and additional release records
              Read-only verification for this exact file set

              Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

              # Read-only host checks. Match the independently announced public-key identity first.
              sha256sum approved-development-release.pub.pem
              # Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
              sha256sum dcentos-sysupgrade-am3-s19jpro-aml.tar
              sha256sum dcentos-sysupgrade-am3-s19jpro-aml.tar.sig
              sha256sum dcentos-sysupgrade-am3-s19jpro-aml.tar.runtime-image.json
              sha256sum dcentos-sysupgrade-am3-s19jpro-aml.tar.runtime-image.sig
              openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19jpro-aml.tar -sigfile dcentos-sysupgrade-am3-s19jpro-aml.tar.sig
              openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s19jpro-aml.tar.runtime-image.json -sigfile dcentos-sysupgrade-am3-s19jpro-aml.tar.runtime-image.sig

              Exact-board file set

              Antminer S21 — am3-s21

              Exact authorized lab workflow only; no general or stock installation

              Experimental; physical qualification pending. Amlogic; exact controller/model prerequisites required. Intended release label: dcentos-sysupgrade-am3-s21.tar.

              Separately authorized host-driven exact-board lab workflow only. This is a host-driven single-slot rootfs-window lab package, with target-side sysupgrade disabled. It is not an A/B update, raw SD image or stock first-install route. Use only a separately authorized exact-controller lab workflow with a verified full restore directory, backup and recovery preparation; no runnable consumer command is supplied here. No consumer installation command is supplied.

              Complete required file set

              Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

              1. dcentos-sysupgrade-am3-s21.tar
                Bytes and SHA-25643100160 bytesa38d7515d152cc76e5bc5711ffb8a796178ef4186122abd1eb151b39704215e5
              2. dcentos-sysupgrade-am3-s21.tar.sig
                Bytes and SHA-25664 bytes6bb8e7141a5b340e7bb56c5a530727b18168f2f52ca7f78c010d830d2e30237c
              3. dcentos-sysupgrade-am3-s21.tar.runtime-image.json
                Bytes and SHA-256341 bytes5f58491955e0147616e3a10205612dd4a282c86a9c9fe76f2824a941451bc020
              4. dcentos-sysupgrade-am3-s21.tar.runtime-image.sig
                Bytes and SHA-25664 bytes4d78537465d8b7e30b4fda943eb1f997dc42133cb0df4c0145aed6362187c62d
              5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
                PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

              Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

              Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

              Report an issue for this exact board

              Installation boundary, recovery and qualification

              Installation boundary: This is a host-driven single-slot rootfs-window lab package, with target-side sysupgrade disabled. It is not an A/B update, raw SD image or stock first-install route. Use only a separately authorized exact-controller lab workflow with a verified full restore directory, backup and recovery preparation; no runnable consumer command is supplied here.

              Recovery: No automatic rollback or physical recovery qualification is established. Retain a full exact-unit backup and verified recovery preparation under a separately authorized lab workflow; otherwise keep existing firmware.

              Physical qualification pending; signatures do not prove boot, accepted shares, thermal/endurance or recovery.

              Optional evidence and additional release records
                Read-only verification for this exact file set

                Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

                # Read-only host checks. Match the independently announced public-key identity first.
                sha256sum approved-development-release.pub.pem
                # Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
                sha256sum dcentos-sysupgrade-am3-s21.tar
                sha256sum dcentos-sysupgrade-am3-s21.tar.sig
                sha256sum dcentos-sysupgrade-am3-s21.tar.runtime-image.json
                sha256sum dcentos-sysupgrade-am3-s21.tar.runtime-image.sig
                openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s21.tar -sigfile dcentos-sysupgrade-am3-s21.tar.sig
                openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s21.tar.runtime-image.json -sigfile dcentos-sysupgrade-am3-s21.tar.runtime-image.sig

                Exact-board file set

                Antminer S21 Pro — am3-s21pro

                Exact authorized lab workflow only; no general or stock installation

                Experimental; physical qualification pending. Amlogic; exact controller/model prerequisites required. Intended release label: dcentos-sysupgrade-am3-s21pro.tar.

                Separately authorized host-driven exact-board lab workflow only. This is a host-driven single-slot rootfs-window lab package, with target-side sysupgrade disabled. It is not an A/B update, raw SD image or stock first-install route. Use only a separately authorized exact-controller lab workflow with a verified full restore directory, backup and recovery preparation; no runnable consumer command is supplied here. No consumer installation command is supplied.

                Complete required file set

                Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

                1. dcentos-sysupgrade-am3-s21pro.tar
                  Bytes and SHA-25643100160 bytesf45fecdee089fcb1a15359866f307b9790ae1b1ceb33b86dcd60371fb6609c37
                2. dcentos-sysupgrade-am3-s21pro.tar.sig
                  Bytes and SHA-25664 bytes5e48990939f02ed73393432eb95473cc51514da27bd1e3d7f213d71dcd5568f1
                3. dcentos-sysupgrade-am3-s21pro.tar.runtime-image.json
                  Bytes and SHA-256344 bytesf5db8873a3404a719bf7a2d61143156b39781b7302ac4eff905cb18e270bb56f
                4. dcentos-sysupgrade-am3-s21pro.tar.runtime-image.sig
                  Bytes and SHA-25664 bytes89aecb61283e3d4ed6a5946581581312740a793e5cd2634f193fb5c28aee05f4
                5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
                  PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

                Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

                Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

                Report an issue for this exact board

                Installation boundary, recovery and qualification

                Installation boundary: This is a host-driven single-slot rootfs-window lab package, with target-side sysupgrade disabled. It is not an A/B update, raw SD image or stock first-install route. Use only a separately authorized exact-controller lab workflow with a verified full restore directory, backup and recovery preparation; no runnable consumer command is supplied here.

                Recovery: No automatic rollback or physical recovery qualification is established. Retain a full exact-unit backup and verified recovery preparation under a separately authorized lab workflow; otherwise keep existing firmware.

                Physical qualification pending; signatures do not prove boot, accepted shares, thermal/endurance or recovery.

                Optional evidence and additional release records
                  Read-only verification for this exact file set

                  Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

                  # Read-only host checks. Match the independently announced public-key identity first.
                  sha256sum approved-development-release.pub.pem
                  # Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
                  sha256sum dcentos-sysupgrade-am3-s21pro.tar
                  sha256sum dcentos-sysupgrade-am3-s21pro.tar.sig
                  sha256sum dcentos-sysupgrade-am3-s21pro.tar.runtime-image.json
                  sha256sum dcentos-sysupgrade-am3-s21pro.tar.runtime-image.sig
                  openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s21pro.tar -sigfile dcentos-sysupgrade-am3-s21pro.tar.sig
                  openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s21pro.tar.runtime-image.json -sigfile dcentos-sysupgrade-am3-s21pro.tar.runtime-image.sig

                  Exact-board file set

                  Antminer S21 XP — am3-s21xp

                  Inspection only; installation and update denied

                  Experimental; physical qualification pending. Amlogic; exact controller/model prerequisites required. Intended release label: dcentos-sysupgrade-am3-s21xp.tar.

                  Inspection only. Do not prepare boot media, install or update from this card. Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

                  Complete required file set

                  Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

                  1. dcentos-sysupgrade-am3-s21xp.tar
                    Bytes and SHA-25643089920 bytesfbc227e8318f8ef023c1df4611966c0934e55d6395874afa3d78554563acaa49
                  2. dcentos-sysupgrade-am3-s21xp.tar.sig
                    Bytes and SHA-25664 bytesacfd4f2a34995520fcdd45a232164830e32411d6b7d9ebd7f0f189280499fc22
                  3. dcentos-sysupgrade-am3-s21xp.tar.runtime-image.json
                    Bytes and SHA-256343 bytesaaa9411b0be7a5210cc5738aaee72ff68b46a3e7e970f4122a9cac3f970d77f1
                  4. dcentos-sysupgrade-am3-s21xp.tar.runtime-image.sig
                    Bytes and SHA-25664 bytes2fbdb72a0dd25d8455ae60d384d18e957a0f28a59073d64a2ffa47f0c172e2b6
                  5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
                    PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

                  Installation/tester notes: this published archive card has no separate TESTER_README.txt receipt. Retain this card's exact installation and recovery instructions below; do not substitute another board's SD tester notes.

                  Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

                  Report an issue for this exact board

                  Installation boundary, recovery and qualification

                  Installation boundary: Verify and inspect this exact package only. Do not prepare boot media, flash or update from this row. Signed package and exact-board restrictions take precedence over the broad feed label.

                  Recovery: No automatic rollback or physical recovery qualification is established. Retain a full exact-unit backup and verified recovery preparation under a separately authorized lab workflow; otherwise keep existing firmware.

                  Physical qualification pending; signatures do not prove boot, accepted shares, thermal/endurance or recovery.

                  Optional evidence and additional release records
                    Read-only verification for this exact file set

                    Download the matching artifact set and public key, preserving all names. This archive card has no separate TESTER_README.txt receipt; retain its exact installation/recovery notes and original signed archive records. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

                    # Read-only host checks. Match the independently announced public-key identity first.
                    sha256sum approved-development-release.pub.pem
                    # Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
                    sha256sum dcentos-sysupgrade-am3-s21xp.tar
                    sha256sum dcentos-sysupgrade-am3-s21xp.tar.sig
                    sha256sum dcentos-sysupgrade-am3-s21xp.tar.runtime-image.json
                    sha256sum dcentos-sysupgrade-am3-s21xp.tar.runtime-image.sig
                    openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s21xp.tar -sigfile dcentos-sysupgrade-am3-s21xp.tar.sig
                    openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-sysupgrade-am3-s21xp.tar.runtime-image.json -sigfile dcentos-sysupgrade-am3-s21xp.tar.runtime-image.sig

                    Exact-board file set

                    Antminer S19jPro — am3-bb-s19jpro

                    Developer SD payload for authorized lab use; no consumer installation path

                    Experimental; physical qualification pending. BeagleBone AM335x. Intended release label: DCENTOS_BB3_S19jPro_beta20261002.tar.

                    Developer SD-payload artifact; no supported consumer installation path is provided here. This is an external SD payload requiring separate boot assets. Do not raw-write this tar, submit it to a stock web updater, install it to NAND or use the Xilinx inactive-slot route. Verified AM335x MLO, u-boot.img, uImage, carrier-aware DTB and exact media preparation are not supplied as a public consumer boot set; keep original firmware and media. The signed payload includes its own README.txt and embedded MANIFEST.json/signature; it does not use the raw-image four-sidecar contract.

                    Complete required file set

                    Keep this exact board's files together in a separate folder. Preserve the original names; similarly named files from another card are different packages.

                    1. dcentos-am3-bb-s19jpro-sdcard.tar
                      Bytes and SHA-25656002560 bytes066487426f531c4dde9c3bd6f322d8417043740f046b2b7aea1ba8f82fcc6ffa
                    2. dcentos-am3-bb-s19jpro-sdcard.tar.sig
                      Bytes and SHA-25664 bytesb83d5965134d2bfc157f6e5aa16073b4483c0666cf159c4f52c68942ca65d547
                    3. dcentos-am3-bb-s19jpro-sdcard.tar.runtime-image.json
                      Bytes and SHA-256348 bytesf597b84beb41db6e4acc4eb4d86b760f3c936ef99ac95753d55ce209a9722c64
                    4. dcentos-am3-bb-s19jpro-sdcard.tar.runtime-image.sig
                      Bytes and SHA-25664 bytesd13a3ff5efc86201916d7517c4360aeefc00f0c1c58caddbc4f2d6f3e9d9125d
                    5. approved-development-release.pub.pemDevelopment verification public key — verify the independently announced identity above; keep default trust pins unchanged.
                      PEM-file SHA-256e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3

                    Developer/tester notes: retain the payload's embedded README.txt and signed MANIFEST.json. The external AM335x boot assets and exact preparation remain separate prerequisites; this file set does not provide a supported consumer installation path.

                    Verify this complete file set before any hardware action. A download or passing host verification does not qualify hardware.

                    Report an issue for this exact board

                    Installation boundary, recovery and qualification

                    Installation boundary: Developer payload archive, not a raw SD image or stock web update. Matching AM335x boot assets and exact media staging are separate prerequisites under an authorized lab workflow. Preserve original media and boot selection; no consumer installation or NAND writing route is provided.

                    Recovery: Retain full backup and original boot media. Complete Stop, disconnect power, restore original media and boot selection. NAND installation and NAND revert remain disabled; no jumper position is inferred. Physical recovery qualification is pending.

                    Physical qualification pending; package signatures do not prove boot, shares or recovery.

                    Optional evidence and additional release records
                    Read-only verification for this exact file set

                    Download the matching artifact set and public key, preserving all names. The BeagleBone payload contains its own README.txt and embedded signed media manifest; retain these original archive members and external boot prerequisites. The commands below verify local files; they do not install firmware. Check host tools and what a refusal means.

                    # Read-only host checks. Match the independently announced public-key identity first.
                    sha256sum approved-development-release.pub.pem
                    # Expected PEM SHA-256: e56e4fe6a4fc23d300b43fb0ef4ede0dcfda19c8988eb9c11476981445e55ee3
                    sha256sum dcentos-am3-bb-s19jpro-sdcard.tar
                    sha256sum dcentos-am3-bb-s19jpro-sdcard.tar.sig
                    sha256sum dcentos-am3-bb-s19jpro-sdcard.tar.runtime-image.json
                    sha256sum dcentos-am3-bb-s19jpro-sdcard.tar.runtime-image.sig
                    openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-am3-bb-s19jpro-sdcard.tar -sigfile dcentos-am3-bb-s19jpro-sdcard.tar.sig
                    openssl pkeyutl -verify -pubin -inkey approved-development-release.pub.pem -rawin -in dcentos-am3-bb-s19jpro-sdcard.tar.runtime-image.json -sigfile dcentos-am3-bb-s19jpro-sdcard.tar.runtime-image.sig

                    Report a reproducible DCENT_OS beta issue

                    Use the existing D-Central contact route. Include firmware version/build, exact card URL, full miner model, confirmed controller/board target and PCB revision, original filename/SHA-256, host-verification result, expected versus actual behavior, reproduction steps and short sanitized diagnostics.

                    Remove passwords, tokens, private keys, seed phrases, pool credentials, wallet/account identifiers, IP addresses, serial/MAC numbers and personal information. Do not send a full unreviewed bundle. Keep existing firmware if verification refuses a file or board identity is unknown; reporting requires no installation.

                    Daily development began in April 2026, building on earlier project work. Downloads and reporting remain free.

                    Controller identification and installation boundaries · Documentation · Recovery reference