Whatsminer T66S++ REL2 Firmware - 2 versions

Overview REL2 2

REL2 is the current firmware version line for Whatsminer T66S++. These are routine update builds - 2 REL2 versions listed below, the latest from 2026-04-16. Pick the most recent one for your miner, but keep in mind: you need NeedUpgradeAgain firmware to move from REL1 to REL2, and rolling back to the previous REL line is not possible.

REL2 (2)

★ Recommended

20260416.14.Rel2 REL2 normal h616

2026-04-16 · 41.5 MB

Whatsminer-all-20260416.14.bin

⬇ Download 41.5 MB Details →

20251209.16.Rel2 REL2 normal h616

2025-12-09 · 41.7 MB

Whatsminer-all-20251209.16.bin

⬇ Download 41.7 MB Details →