[Q]How to restore lost IMEI

[Palihopy]

Hi guys! My phone is show this error "A problem was detected with your device. your device IMEI number is invalid." and now IMEI number is 004999010640000. and now my phone cannot detect any GPS signal. can I solve it. and how to solve. thank you
Device : i897
rom : CM10 stable

 

[BWolf56]

Hi guys! My phone is show this error "A problem was detected with your device. your device IMEI number is invalid." and now IMEI number is 004999010640000. and now my phone cannot detect any GPS signal. can I solve it. and how to solve. thank you
Device : i897
rom : CM10 stable

Flash back to stock KK4 (without bootloaders). That should fix your IMEI problem.

To avoid further problem, once on KK4, make a backup of your efs folder. Which can be used if it ever happens again.

You'll have to work your way back up to CM10 from KK4. As always, follow the full instructions.