: Users must first enable "Diag Mode" on the device, often via ADB commands or specific dialer codes like *#*#717717#*#* Back up Original QCN : It is highly recommended to use the Qualcomm Flash Image Loader (QFIL)
One of the most common errors with basic hex editors is a checksum mismatch, which causes the phone to revert the IMEI on reboot. QLM v102 automatically calculates and corrects the checksum, ensuring that the repaired IMEI persists after a restart. qlm imei repair tool v102 better free tool all qualcomm link
