Axpert Firmware Update

If the update stalls, do not panic. Restart the software and try the flash again immediately. Most Axpert bootloaders allow for a retry even if the previous attempt failed.

The inverter fans will typically kick into high gear, and the LCD may go blank or show "UP." 4. The Waiting Game axpert firmware update

If your inverter shows error 90 (PV over current), error 69 (BMS loss), or error 20 (over temperature) when conditions are normal, a firmware patch may resolve false positives. If the update stalls, do not panic