If this error happens while you are updating the DrivePro Body 30 firmware to v1.9 using the iOS app, it's due to the new firmware version being slightly different in its Bluetooth settings from the last one. The app will continue sending signals to the phone to disconnect.
What to do:
1. Turn off the DrivePro Body 30.
2. Turn off Bluetooth on your phone, and then turn it back on.
3. Turn on the DrivePro Body 30.
4. Reconnect the camera to the app.