When updating firmware in particular the nECY firmware. The firmware update is not succesfull
Errors such as:
"arithmetic operation resulted in overflow"
Or "failed to read firmware from Bridge"
Or something about NACK and SensorIDNotFound
This may be due to a wiring loop, resolve the wiring loop and communication issues and try again
If wiring loops are not found, also try nCOMM directly into the BRG. Disconnect all the ports and update the device locally.