ismii

I have a 24 inverter (provided by inverex) model name:  Axpert VM 3Kva Plus . it comes with USB port only. I tried to flash new firmware to it but it failed.
so I opened it up and found that there is USB to SERIAL board inside inverter I just took it out and replace it with  simple com board from another inverter and now I can flash it with out any problem.
The reason that some inverters dosent flashes through USB port is the USB to SERIAL board that is restricted to 2400 baud rate so the inverter can communicate to pc monitoring software but cannot be flashed via USB port because flashing is done with 9600 baud rate.
so if anyone want to flash inverter firmware and don't have com port on inverter you just have to replace the USB board the  with com board from any other inverter and flash the inverter with out any problem.
USB to serial board of my inverter is attached

I have a 24 inverter (provided by inverex) model name:  Axpert VM 3Kva Plus . it comes with USB port only. I tried to flash new firmware to it but it failed.
so I opened it up and found that there is USB to SERIAL board inside inverter I just took it out and replace it with  simple com board from another inverter and now I can flash it with out any problem.
The reason that some inverters dosent flashes through USB port is the USB to SERIAL board that is restricted to 2400 baud rate so the inverter can communicate to pc monitoring software but cannot be flashed via USB port because flashing is done with 9600 baud rate.
so if anyone want to flash inverter firmware and don't have com port on inverter you just have to replace the USB board the  with com board from any other inverter and flash the inverter with out any problem.
USB to serial board of my inverter is attached

I have a 24 inverter (provided by inverex) model name:  Axpert VM 3Kva Plus . it comes with USB port only. I tried to flash new firmware to it but it failed.
so I opened it up and found that there is USB to SERIAL board inside inverter I just took it out and replace it with  simple com board from another inverter and now I can flash it with out any problem.
The reason that some inverters dosent flashes through USB port is the USB to SERIAL board that is restricted to 2400 baud rate so the inverter can communicate to pc monitoring software but cannot be flashed via USB port because flashing is done with 9600 baud rate.
so if anyone want to flash inverter firmware and don't have com port on inverter you just have to replace the USB board the  with com board from any other inverter and flash the inverter with out any problem.
USB to serial board of my inverter is attached

I have a 24 inverter (provided by inverex) model name:  Axpert VM 3Kva Plus . it comes with USB port only. I tried to flash new firmware to it but it failed.
so I opened it up and found that there is USB to SERIAL board inside inverter I just took it out and replace it with  simple com board from another inverter and now I can flash it with out any problem.
The reason that some inverters dosent flashes through USB port is the USB to SERIAL board that is restricted to 2400 baud rate so the inverter can communicate to pc monitoring software but cannot be flashed via USB port because flashing is done with 9600 baud rate.
so if anyone want to flash inverter firmware and don't have com port on inverter you just have to replace the USB board the  with com board from any other inverter and flash the inverter with out any problem.
USB to serial board of my inverter is attached

I don't know. I don't know that inverter well enough. Just replied from my more general MCU knowledge, things that are the same pretty much across all embedded type systems.