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ASIC.TOOLS / FIRMWARE

Download Bitmain Antminer S21 (200Th) Firmware

Download firmware for Bitmain Antminer S21 (200Th) from the official source. Versions: 1. Check compatibility and release details; local copies are unavailable.

Bitmain Antminer S21 (200Th)

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.

Available versions

1 version
Exact modelOfficial source: BITMAIN Product Manual & Firmware ↗
Version

FR-1.12

FR-1.12(251009-S21).bmu

Local copy unavailableOpen official source ↗
Published / updated
2025-11-20
Compatibility
ANTMINER S21
Size
15.2 MB
Check file integrity · SHA-256

SHA-256

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MD5

45c6e3f115a05fa3e6a4a823d9fa500f

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

Release notes

MD5:45c6e3f115a05fa3e6a4a823d9fa500f Updates： 1. Implemented slight frequency reduction and other optimization strategies for machines that may shut down due to high temperatures. 2. Enhance the stability of the firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware.

Official source ↗

Sources checked 14 September 2026