Introduction Launched in 2017 by MicroBT, the Whatsminer M3 marked the company’s entry into the Bitcoin ASIC miner market. While long since obsolete for profitable SHA-256 mining (competing against the S19, M50, and newer generations), the M3 remains a fascinating piece of mining history. Its firmware—a customized Linux-based operating system with a closed-source mining engine—holds the key to understanding how first-generation MicroBT devices operated.
Alternatively, SSH into the miner (root / root or admin / admin) and run: whatsminer m3 firmware
| Version | Release Date | Key Changes | |---------|--------------|--------------| | 2.0.0 | 2018-01 | Initial release, 11.5 TH/s @ 2150W | | 2.1.1 | 2018-05 | Improved pool compatibility, fixed watchdog issues | | 2.2.0 | 2018-09 | Stratum support, web UI performance fixes | | 2.2.3 | 2019-02 | Last official release – security patches, fan speed curves | Official firmware files ( .tar.gz or .ubi images) are no longer hosted on MicroBT’s website for the M3. They survive only on third-party archives and mining forums. 3. How to Identify Your Current Firmware Access the miner’s web interface (default IP: 192.168.1.254 – though this may vary). Go to System → Version or check the Overview page. Introduction Launched in 2017 by MicroBT, the Whatsminer
However, as a learning tool or for off-grid solar mining (where electricity is free), the M3 offers a robust study in early ASIC firmware design. Its firmware is simpler and more transparent than modern locked-down miners (e.g., M50, S19), making it ideal for reverse engineering or homebrew monitoring scripts. The Whatsminer M3 firmware represents a snapshot of mining’s transitional era—between the chaos of FPGA/GPU rigs and today’s vertically integrated, cloud-managed ASICs. While officially dead, its legacy lives on in repair forums and hobbyist labs. If you own an M3, treat its firmware with caution: upgrade to the last stable release (2.2.3), secure it behind a firewall, and never trust unsigned third-party builds. Alternatively, SSH into the miner (root / root