ASIC firmware downloads / ASIC specifications
ASIC.TOOLS / FIRMWARE
Bitmain Antminer S21 XP Hyd (473Th) 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 versionsExact model Official source: BITMAIN Product Manual & Firmware ↗
| Version | Published / updated | Compatibility | Size | SHA-256 | Download |
|---|---|---|---|---|---|
| FR-1.70FR-1.70(260108-S21 XP Hyd.).bmu | 2026-01-22 | ANTMINER S21 XP Hyd. | 17.3 MB | —MD5: 78c48309eb28517f012c4f30d33b3f4b | Official listing; local copy unavailableOfficial source ↗ |
| Release notes: MD5:78c48309eb28517f012c4f30d33b3f4b Updates： 1. Optimized firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | |||||
Verify the downloaded file with SHA-256 before uploading it to a miner.
Sources checked 14 September 2026