@eg4eric thank you. This new RS485 firmware is compatible with the previous RS232 firmware version S02T25?

@yooperjay Thank you for testing out that you can update the firmware with old versions (and supplying the files). I had a feeling that was possible b...

@solargear I also experienced the same issue when completing an upgrade yesterday evening on 3x Indoor Wall Mount 280Ah, and I was planning to contact...