So I tried updating the firmware on my BMV712 using Bluetooth. It proceeded well at first, until about 5%. Then jumped to 10%, back to 4% and finally the app reported lost connection.
I am now left with a BMV that displays 'bt200' and will not change. I can no longer establish communication with the BMV and so it looks like I am without a battery monitor for the time being.
Android phone, Victron Connect v5.83 app, BMV712
Any help would be MOST appreciated!