Galaxy S6 G920A AT&T - IMEI TROUBLE

[chedenial]

Hello guys, i have an Samsung Galaxy S6 G920A ATT&T , this have another imei from the original (350000000000006) I dont know way , but themovile cant recieve calls , o make calls

How can i change the imei for the original ?

Regards !

[pd100]

Your EFI files are corrupt, I had the same thing happen to my s4 tried everything i could to fix it.

unfortunately I had to send it in to Samsung for warranty repair.