: Connect the inverter to your PC and check the Device Manager for the assigned COM port number.
: Open the UPSReflashTool (or specific MCU tool provided with the firmware). Load File : Select the .hex or firmware file. axpert vm iii firmware
Disclaimer: This guide is for educational purposes. Modifying inverter firmware carries inherent risks, including electrical shock, fire, and equipment damage. Always consult your local licensed electrician or inverter distributor before performing updates. : Connect the inverter to your PC and