Bitmain Antminer S3 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

4 versions

Exact model Official source: BITMAIN Product Manual & Firmware ↗

Version	Published / updated	Compatibility	Size	SHA-256	Download
20150109antMiner_S320150109.bin	2025-05-29	ANTMINER S3	7.8 MB	`d7de5b6914885700a3fb248a7abfa3d32f9c1ab3a3a2a8e88e3f7980e33cf3b0`MD5: 3e77fc58e4cf9f6c27810c8154c8b0f9	Download local verified copy ↓Official source ↗
Release notes: 1. fix bug of negative temperature 2. fix power mistake adjustment. 3. disable VDD adjustment function. MD5: 3E77FC58E4CF9F6C27810C8154C8B0F9
20140826antMiner_S320140826.bin	2025-05-29	ANTMINER S3	7.8 MB	`8e0b4a80777e6ed756c2d4c0050791fc109c1247266672fbe5268f036d3785cd`MD5: 48b2e769e1b57892b71d488711773002	Download local verified copy ↓Official source ↗
Release notes: support S3+ MD5: 48B2E769E1B57892B71D488711773002
20140721antMiner_S320140721.bin	2025-05-29	ANTMINER S3	7.8 MB	`—`	Official listing; local copy unavailableOfficial source ↗
Release notes: No beeper altert when there is no immediate hashing work. During the normal mining, Green LED is always on. If there is no immediate hashing work for 1 second, the Green LED will turn off. If it lasts more than 1 minute without hashing work, green LED is kept off and beeper rings.
20230719112813Antminer-S19-XP-merge-release-20230719112813.bmu	2023-08-12	ANTMINER S3	43.4 MB	`—`	Official listing; local copy unavailableOfficial source ↗
Release notes: only for S19 xp internal test.

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

Sources checked 14 September 2026