If you can’t upgrade firmware or firmware upgrade is failed, check the following possible causes and solutions.
1. Incorrect firmware versionEnsure you are upgrading the correct firmware version based on the miner’s model.
2. Security firmware v.s. non-security firmwareIf the miner backstage shows “System Upgrade Failed - Cannot Find Signature!!!” It means the firmware you are upgrading is not a security firmware.
3. An incompatible browser or a browser with excessive cacheUse different browsers to test and we recommend Google Chrome or Firefox. Clear the cache. If not succeed, use a different PC or laptop.
4. The miner has been hacked5. The control board has an issue
Solution: a. reset the control board; b. use the SD card to recover the program; c. replace with a good known one to test.
