ASIC firmware downloads / ASIC specifications
ASIC.TOOLS / FIRMWARE
Bitmain Antminer B3 (1Kh) firmware
Official firmware versions matched to the exact ASIC model or manufacturer family. Local copies include SHA-256 checksums.
Firmware is hardware-specific. Match the exact model and control-board revision, back up settings, use stable power, test one miner first, and never interrupt an upgrade. A wrong image can make the controller unbootable.
Official manufacturer firmware
2 versionsExact model Official source: BITMAIN Product Manual & Firmware ↗
| Version | Published / updated | Compatibility | Size | SHA-256 | Download |
|---|---|---|---|---|---|
| update_1000.tarupdate_1000.tar.gz | 2025-05-29 | ANTMINER B3 | 84 KB | — | Official listing; local copy unavailableOfficial source ↗ |
| Release notes: Firmware for improving hashrate，Do not power off during the upgrade！ | |||||
| 201805232020ANTMINER-B3-201805232020-750M.tar.gz | 2025-05-29 | ANTMINER B3 | 37.6 MB | — | Official listing; local copy unavailableOfficial source ↗ |
| Release notes: Fix fan speed display problem | |||||
Verify the downloaded file with SHA-256 before uploading it to a miner.
Sources checked 14 September 2026