Antminer S21
Antminer S21 is an ASIC miner from Bitmain Antminer targeting the SHA-256 algorithm with a rated hashrate of 200 TH/s and 3500W power draw. Released in 2024. On this page we collect every official firmware release, manual, SD-card recovery image, and adjacent utility we have for the miner. Files are served as-is. Direct download links point at our CDN. Before flashing, skim the release notes for the version you pick (if any).
Firmware
| File Name | Size | Date | |
|---|---|---|---|
Antminer-S21-AML-release-202407111638.bmu | 14.43 MB | 2024-11-23 | ↓ Download |
SD Card Images
| File Name | Size | Date | |
|---|---|---|---|
S21-aml-flashcard.zip | 24.50 MB | 2024-11-25 | ↓ Download |
Miners Tools — open ASIC miner firmware archive.
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