Device ID (DevEUI) is all Zeros

If the Device ID (also known as DevEUI or Device EUI) is all zeros, the AT+DI command will return “00-00-00-00-00-00-00-00”, follow the steps below to reconfigure the Device ID.

1) Download the 3.3.5 or 4.x.x firmware at the link below and flash firmware into mDot or xDot. 

If you plan on using a 3.x.x based firmware, then download and flash the 3.3.5 firmware:

If you are using a 4.x.x based (4.0.0 or newer) AT command firmware, then that firmware should allow you to configure the Device ID and you can skip to step 2. If you’re using a custom firmware using the 4.x.x library, then flash the latest 4.x.x AT command firmware from the link below:

2) In a terminal at 115200 baud 8N1 connected to the AT command port of the Dot, program the Device ID (shown as Node ID) from the label. Ignore the colon (":") between octets. For example:

3) Store the changes to flash. This will also store the frequency determined by the protected-config firmware.

4) The Device ID reprogramming is complete and you can now flash the desired firmware to the Dot. 
The xDot and mDot AT command firmware application is found at: