Download Lenovo L38012 Opm1 171019 019 Efs Qcn Security Files Rar | Must Try

Modifying or repairing IMEI numbers is subject to local laws and should only be done to restore the device's original factory identity.

Stores the wifi and Bluetooth mac adress, some network data , IMEI data (In some samsung phones, not in all models). android.stackexchange.com EFS Backup and Restore Guide for Samsung | PDF - Scribd Modifying or repairing IMEI numbers is subject to

Standard Qualcomm tools used for flashing and restoring QCN files. some network data

Contains network calibration data and is used to restore the device's ability to connect to mobile networks. How to Use These Files IMEI data (In some samsung phones

A popular professional tool for backing up and restoring EFS/QCN partitions. The Process:

Connect the device in Diagnostic or EDL (Emergency Download) mode.