Bitmain Antminer S11 (20.5Th) 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

2 versions

Exact model Official source: BITMAIN Product Manual & Firmware ↗

Version	Published / updated	Compatibility	Size	SHA-256	Download
201908011639ANTMINER-S11-all-user-201908011639-sig.tar.gz	2025-05-29	ANTMINER S11	40.3 MB	`fe790584647df7bf9efef878b4f473a69f6651c55364f44eb94e7d4f1338677e`MD5: 672b4551a3c5e275b6797dacf21b1668	Download local verified copy ↓Official source ↗
Release notes: MD5:672b4551a3c5e275b6797dacf21b1668 1. Enhance anti-virus capability 2. S11 user firmware, support both 7007 and 7010 control board 3. Secure firmware with signature, SSH port is closed 4. Few of the miner probably have lower hashrate in low temperature environment
201812082324ANTMINER-S11-xilinx-201812082324-autofreq-user-Update2UBI-NF.tar.gz	2025-05-29	ANTMINER S11	42.2 MB	`e2f57fe7fba079085cf52edb95c2998c024c829292c767816799dfb20d4a6ec3`MD5: af5124c67c74470c5443a023fe69174a	Download local verified copy ↓Official source ↗
Release notes: MD5: af5124c67c74470c5443a023fe69174a S11 User Firmware

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

Sources checked 14 September 2026