We can use Innosilicon power supply G1286 firmware to fix abnormal voltage failure.
When upgrading the firmware of the INNOSILICON PSU, we need to use the firmware corresponding to the code on the psu box to .
Note: Updating and upgrading firmware requires JINK V9 emulation downloader.
This link is a digital file, which can be downloaded for free as a student of the ZMRC bitcoin miner repair training course.