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Antminer S9 DCENT_OS Firmware: Status and Download

Antminer S9 · Released / Experimental

Verified SD trial available

For confirmed CRT0401/CRT0402 JP4 boards only; it runs from removable media without writing NAND. CRT0301/CRT0302 do not inherit this route.

Risk: Experimental firmware can brick this miner, cause mining downtime, and may affect warranty coverage. Do not continue until the exact board and recovery path are confirmed.

Download the S9 SD trial imageVerify SHA-256JP4 trial and recovery steps
Exact board
Zynq/Xilinx am1-s9; redundant-slot NAND, with a separate removable-media boot route
Verified file
1 authorized SD trial image · 1 receipt-only sysupgrade archive
Install
Public Beta Guarded
Recovery
Not Implemented

The shortest responsible path

  1. Identify: confirm the exact model and physical control-board lane.
  2. Choose: use only the route authorized for that lane; no route means no flashing.
  3. Recover: verify the stop condition and restoration path before any write.

Files and current evidence

FileExact laneVerificationOperator route
DCENTOS_XIL1_S9_beta20260709.taram1-s9 Zynq/Xilinxe0bd9e30c7277a86f0c601bb882f41a7dd311160e29d7aefc4e017d2454ab845
Embedded payload manifest: Ed25519 verified. No outer detached signature located.		Receipt only — no operator CTA
DCENTOS_XIL1_S9_SD_beta20260709.imgam1-s9 Zynq/Xilinx1c61fde315ce6eadcef5df79690ed15558173c96216680970f8de3360081b266
Outer SHA-256 receipt only; no embedded or outer detached signature claimed.		Use only through the documented route
Use only the documented JP4 removable-media route; do not write NAND or reuse this route on CRT0301/CRT0302.
Mining, installation, and recovery boundaries
Mining
The project platform matrix reports standalone cold-boot mining with pool-accepted shares on the BM1387 Zynq lane; this website does not claim an independent reproduction.
Installation
Bitmain's S9 recovery documentation distinguishes complete-board CRT0401/CRT0402 (JP4), CRT0302 (AB pads), and CRT0301 (no SD slot). The public DCENT_OS trial documents only the JP4 route; no other PCB revision inherits that authorization. The current public evidence still lacks a complete witnessed first-install, soak and persistent-recovery capstone for this release.
Recovery
For the documented removable-media trial, power off, return JP4 to its photographed original position, remove the SD card, then boot untouched NAND. Other S9 PCB revisions require their own verified route. A witnessed persistent stock-restoration procedure for this exact release is not published.
Proof, gap, and limitations

Proof: Project-reported accepted-share mining plus verified outer hashes for the S9 sysupgrade archive and SD image.

Open gap: Publish a witnessed current-release install, boot, soak and persistent stock-restoration receipt.

  • The S9 SE is a different BM1393/Ctrl_C43 target and must not use these files.
  • A downloadable file is not evidence that every S9 control-board variant is authorized.
  • No independent stock-versus-DCENT_OS benchmark is linked for this artifact.
Evidence on this page

Continue with the right evidence

Registry 2026-09-01.5 · reviewed 2026-09-01. Availability, binary, mining, install, and recovery are separate claims.