Bitmain Antminer S9k (13.5Th) 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

1 versions

Exact model Official source: BITMAIN Product Manual & Firmware ↗

Version	Published / updated	Compatibility	Size	SHA-256	Download
201912131001ANTMINER-S9k-user-OM-201912131001-sig_4859.tar.gz	2025-05-29	ANTMINER S9k	30.2 MB	`—`	Official listing; local copy unavailableOfficial source ↗
Release notes: MD5: 17f23c240b929aaa8be57fef24 9cb306 Release Notes: 1. Optimize over-temperature issue in special cases. 2. Optimize the problem of continuous voltage rise in special cases. 3. Optimize the cycle time of temperature detection, initialize the temperature protection detection mechanism, and optimize the processing process of reading special temperature values. 4. Optimize the processing flow of power on the hash board when initialization. 5. Remove boot.bin and etc files, enhance reliability about upgrade. 6. Enhance anti-virus capability with new security mechanism . 7. Use new build tools to build firmware. 8. If upgrading the firmware through no keeping configuration file, it is need to configure miner account and miner pools to mine, otherwise(Upgrading through using keeping configuration file), it is no need to configure the miner and miner pools using previous miner settings to mine.

Verify the downloaded file with SHA-256 before uploading it to a miner.

Sources checked 14 September 2026