How to upgrade the BMS firmware on B230?

I have a B230 battery connected to an AC200L unit. I was checking for BMS updates in the Bluetti app and saw that both units have new firmware updates. I successfully updated the AC200L unit to v1043.13.

When I tried to update the B230 battery, it said “Please check whether the BMS is parallel. Firmware upgrades can only be done when one battery pack is connected. Please remove the extra battery packs if there is any.”

How do I fix this? I don’t have any other battery packs connected. Just one AC200L and one B230.

@tudor Welcome to the forum! :raised_hands:
Sorry, the B230 does not support connecting to the host for updates, if the host has been updated to the latest there would be no problem.