. Repairing the International Mobile Equipment Identity (IMEI) is a complex process often necessitated by software corruption, such as a "null" IMEI or unknown baseband after a failed update. DeviceAtlas Technical Overview of Repair Methods

If you encounter issues during the repair process, try:

For users uncomfortable with command-line or QPST, commercial repair boxes offer one-click solutions. These tools are popular in cell phone repair shops.

: Offers a generic "Repair IMEI" function for Android devices, including specific support for Motorola authentication in recent updates.