Xt2163-4 Imei Repair ((link))

su dd if=/dev/block/by-name/modemst1 of=/sdcard/modemst1.bak dd if=/dev/block/by-name/modemst2 of=/sdcard/modemst2.bak

If the corruption was minor, this restores the IMEI. If not, proceed to advanced methods. xt2163-4 imei repair

It is vital to distinguish between a corrupted original IMEI and changing an IMEI. su dd if=/dev/block/by-name/modemst1 of=/sdcard/modemst1