Antminer S21+HYDRO
Antminer S21+HYDRO is an ASIC miner from Bitmain Antminer targeting the SHA-256 algorithm with a rated hashrate of 319 TH/s and 4785W power draw. Released in 2025. 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).
No files available yet. They will be added after the firmware scan.
Miners Tools — open ASIC miner firmware archive.
✈️
Download started
Subscribe to our Telegram — archive updates, new firmware and teardowns.
Open Telegram