What is the safest way to update ASIC firmware?

Verify the exact model and control board, download from official sources, back up settings, and update on a stable power and network connection.

What should I check before flashing?

Confirm firmware compatibility, read release notes, and prepare a rollback plan to stock firmware. Avoid files from unofficial mirrors.

Why does control board compatibility matter?

A mismatched control board is a common cause of failed flashes and boot loops. Always match the firmware to the correct board revision.

How can I reduce the risk of bricking a miner?

Do one change at a time, avoid power loss during flashing, and keep recovery media (SD image / rescue instructions) ready for the exact model.

Are custom firmware gains worth it?

Custom firmware can improve efficiency or add features, but results depend on model, cooling and silicon quality. Start with conservative profiles and monitor stability.

How to update ASIC firmware safely

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Before you flash: preparation

Confirm the exact model, sub‑model and control board generation. Many failures happen when firmware is flashed onto an incompatible board.

Plan a rollback path: keep the latest stock firmware and know how to restore it (web UI, SD recovery, or vendor tools).

Record current settings (pools, fan/power limits).
Take photos of the control board label and firmware version.
Update one miner first — then roll out to the rest.

Control board checklist Rollback & recovery guide

Download from official sources

Use official firmware pages and documentation hubs. Avoid random file mirrors and re‑uploaded archives.

If the vendor publishes checksums/signatures, verify them before flashing.

Prefer HTTPS vendor domains and official GitHub/org pages.
Keep a copy of the original archive and release notes for auditing.

Stock firmware sources Custom firmware sources

Flashing methods (web UI vs SD vs batch tools)

Most miners support a web‑UI upgrade. Some generations or recoveries require SD images or vendor‑specific tools.

Batch tools (e.g., vendor toolboxes) help when you manage many units, but they should still be tested on a single miner first.

Web UI: upload firmware → wait for reboot → confirm version.
SD: write image → boot → wait for recovery → revert to normal boot.
Batch: scan devices → select correct model → push firmware.

After the update: validation

After flashing, validate stability before enabling overclock/autotune profiles.

Check pool hash rate, temperature, fan RPM, error rate, and that all hashboards are recognized.

Run on default/safe power for 30–60 minutes before tuning.
Keep logs/screenshots for the first stable configuration.

Monitoring tips Undervolt & overclock basics

FAQ

Should I update firmware if everything works?

Only update when you need a fix, new features, or security improvements. If you do update, follow a staged rollout and keep a rollback plan.

What is the biggest cause of bricking?

Flashing incompatible firmware for the wrong control board or sub‑model.

Can I go back to stock firmware?

Usually yes — but methods vary by manufacturer/model. Keep official stock firmware and read the rollback guide first.