jarjarbeens

Hello all, Good news. Finally succeded to re-flash my remote panel and make it work again!!! These are the steps that I followed. 1 - Connect all (PC to Inverter via RS232 to USB cable) with no power supply given to the Inverter (No battery and No AC IN). 2 - Have RemotePanel_Reflash_MCU SW prepared on PC. (Correct COM port selected) 3 - Provide power supply to inverter (AC In) and immediately (only few seconds after) click on "Update MCU" button in RemotePanel_Reflash_MCU SW. After steps 3 I started seeing that flash started. More or less after 10 minutes the flash was completed and LCD remote panel was working again. Thank you guys for the support given. Probably this thread will be useable for someone that will experience same issue in the future.

Thank you @Coulomb, @Jacques69 and @Calvin for your comments/feedback. The biggest difference which I'm seeing, from what people have experiences and posted is that when they are trying to flash again LCD there is a sort existing communication happening between remote panel and PC. Sometimes this seem might fail but by retrying finally correct flashing is achieved. In my case this is not happening. I can clearly see that COM port is openned (selected approapiate COM numebr in Remote Panel_ReflashTool), but after some seconds, more or less 1 min, I get error message that there is no answer from UPS. No other methoud available. Just in case, I ordered new RS232 - USB converter to discart any cable communication issue.

Hello @Coulomb, Thank you for your more than welcome feedback. I've tried all combinations with no success. It is like the remote control display is totally dead and no answer/communication with it is possible. Tried flashing both remote panel and main firmware using SW found here: Really I can't believe that there is no such other way to restore it to factory default SW.

Hello all, I few days a go, I decided to update my Axpert 5Kw VM III firmware, but unexpectectly I got an error in the middle of the remote panel reflash process. (PC via RS232 communication cable) Now my panel is not responding, meaning that nothing appears in my LCD and none of the buttons, including power switch are working. Due to current issue my inverter will not even boot-up, since probably the remote panel is not sending any commands to internal inverter board to initiate power up sequence. Is there any way to restore/reflash the remote panel thought any other method? Thanks in advance.