Watch Us Build It
This is the build-in-public log for DCENT_OS — D-Central’s open-source (GPL-3.0 target) firmware for Bitmain Antminer hardware. We are not going to hand you a polished launch and pretend it appeared overnight. Instead, this page tracks the honest road from where we are today to a public beta: the milestones we have hit, the ones still ahead, and dated notes on what actually changed.
Right now DCENT_OS is in active closed beta on the Antminer S9 family only. There are no public image downloads yet. It is experimental firmware: a bad flash, a wrong control-board image, or an interrupted write can brick your miner. Public beta is planned for summer 2026 — an estimate, not a guarantee. We will not commit to a date we cannot keep, and we will never take a pre-order. If a milestone slips, this log is where you will read about it first.
For the live snapshot of what is flashable today versus planned, see the DCENT_OS beta-status page. For the full project story, start at the DCENT_OS overview.
Milestone Tracker
The road to public beta, one validated step at a time. Status is honest: “Done” means proven on real S9 hardware, “In progress” means actively being worked on now, and “Planned” means scheduled but not started or not yet shipped. Targets are estimates that can move as hardware validation exposes real-world issues.
| Milestone | Target | Status |
|---|---|---|
| First accepted shares on S9 (real hardware) | March 2026 | Done |
| Selected tester validation | Q1 2026 | Done |
| Recovery-first documentation (install, rollback/UART, heat mode) | Q2 2026 | Done |
| Closed beta testing on the S9 family | 2026 | In progress |
| S9 SD-card image to accepted testers | 2026 | In progress |
| S19 / S21 family bring-up | Rolling | In active development |
| Public beta rollout | Summer 2026 (estimate) | Planned |
| GitHub repository public release (GPL-3.0) | Summer 2026 (estimate) | Planned |
| pyasic-compatible fleet API hardening | After public beta | Planned |
DCENT_OS does not exist in a vacuum. We are standing on the shoulders of the firmware and hardware work that came before us — BraiinsOS+, VNish and LuxOS on the firmware side, and skot9000’s Bitaxe and the Open Source Miners United (OSMU) community on the open-source hardware side. We are one more layer in a stack other people started, and we do not claim to beat the work that paved the way.
Dev Log
Newest entries first. Each entry is a dated, honest note on what changed — progress, setbacks, and decisions.
2026-06-13 — Closed beta on the S9, docs in place, road published
Where things stand as this log opens: DCENT_OS is in active closed beta on the Antminer S9 family. On real S9 hardware the firmware enumerates the BM1387 chip chain over UART, holds stable Stratum V1 pool connections, submits shares, negotiates AsicBoost (version rolling), and serves its own web dashboard. The adaptive binary-search autotuner converges per chip, and a basic Heat Mode targets a room temperature by trading hashrate for quieter, steadier heat.
What is intentionally not here yet: there are no public image downloads. The S9 image goes to accepted closed-beta testers only, with a checksum to verify before writing. The S17 / S19 / S21 families are in active development, not shipping — there is no image for them, so do not try to flash one. The source repository is planned to go public as GPL-3.0 after the public-beta period (currently estimated for summer 2026).
Shipped recently: a recovery-first documentation set so testers can always get a board back — the S9 SD-card install guide, the rollback & UART recovery guide, and the Heat Mode first-boot walkthrough. Read the recovery guide before you flash anything. That is the whole philosophy: never put experimental code on a board you cannot get back.
Next on the bench: long-term 24/7 stability burn-in across multiple S9 units, per-chip health monitoring and dead-chip bypass, profile persistence across reboots, and tighter power metering. Those have to be solid before the beta widens. We will post the next entry when there is something real to report — not on a schedule.
Follow Along — Join the S9 Beta Waitlist
Want to watch the build and be first to know when an S9 image is ready to flash? Join the waitlist. It is a waitlist, never a pre-order — there is nothing to buy, and we will only reach out when there is an S9 beta image in your hands. You should be comfortable identifying control boards, flashing SD cards, reading logs, and recovering hardware when things break. If that is not you yet, follow the dev log above and check back as the beta matures.
Join the DCENT_OS S9 closed-beta waitlist →
More development discussion happens in real time on the D-Central Discord. DCENT_OS is being built in the open, with the community, for the plebs.
Related products, repair, and setup paths
- how D-Central diagnoses ASIC repairs
- ASIC troubleshooting library
- ASIC manuals and repair guides
- replacement hashboards
- ASIC control boards
- ASIC power supplies
- S19 family replacement hashboard
- C52 replacement control board
- APW12 S19 power supply
- immersion cooling hub
- home immersion cooling guide
- ASIC miners for immersion planning
- ASIC cooling parts
- airflow shroud before immersion
- compare miner specs in the database
- ASIC repair support
- Antminer S19 specs and profitability
- buy a tested Antminer S19
- Antminer S19 maintenance guide
- Antminer S19 repair service
- Antminer S21 specs
- Bitmain Antminer S21
- Antminer S21 maintenance guide
- BM1370BC S21 Pro chip
- Antminer S9 specs
- Bitmain Antminer S9
- Antminer S9 maintenance guide
- S9 hashboard repair parts bundle
Last reviewed June 13, 2026.