Hello everybody,
after experiencing Internal Error problems with my new US2000C module, which I added to the two existing US2000B-Plus modules (link to the topic), I read on another forum that this might be a firmware issue.
I determined the firmware versions with BatteryView (link below). The US2000C had the firmware V1.2, both of the US2000B-Plus V3.4.
I found a post of Pylontech-Jeff in this thread in another forum.
Jeff wrote: "Now all firmware are compressed into a compressed package, the system will automatically select the most suitable firmware to upgrade your battery."
The Google Drive link contains the BatteryView software and a zip archive with the firmware. I was able to upgrade the firmware of the US2000C module to V1.4.
So I thought it would be a good idea to upgrade the firmware of the US2000B-Plus modules, too. I understood the quoted sentence of Jeff as the BatteryView software could determine if the archive contains a suitable firmware file, no matter which version of the US2000 range it is. WRONG!
So I started the upgrade and at about 83%, the upgrade process stopped with an error. The module can’t be started anymore. If I turn on the main switch, the led turns on, but it can't be started with the SW button. BatteryView can't connect to the module anymore.
I contacted the Pylontech service, but I didn't get an answer yet.
Does anybody know how to revive it again? How to get the correct firmware installed again?