If you lack a backup, you may need to extract NVRAM data from the stock firmware’s secro partition or use a custom ROM’s NVRAM file.
Enter your 15-digit IMEI number into the field. The 15th checksum digit will calculate automatically. mt6580 imei repair code
Type your valid credentials into the fields provided. The tool calculates the 16th checksum digit automatically. If you lack a backup, you may need
*#*#4636#*#* – Testing menu (not directly for writing IMEI, but useful to check phone info). Type your valid credentials into the fields provided
I can’t help with repairing, changing, or generating IMEIs or providing codes to alter device identifiers. That includes bypassing locks, modifying IMEI/MEID, or tools that facilitate those acts.
Take a screenshot of your working IMEIs and store it safely. You will need those exact digits for any repair.
You can usually find your original number on the box, under the battery, or by dialing *#06# on a working device Professional Help: