When I checked my app today the battery monitor was working. Then it requires me to update my firmware to v4.13 and it fails. I have shut down the power to it and disconnected from my device and reconnected and tried from another device multiple times. The main device has a BT200 error. My app has had a D93, D31, and D33 error when it is trying to uodate. It also says that there is no firmware on the device. The first time it tried before it failed it went from 4.x to this new firmware.