Always backup your EFS/QCN before touching anything. If this goes wrong, you could permanently lose your hardware's ability to connect to a network.
To get this done, you typically need a combination of these free tools: qcn imei repair tool
Assuming you have a corrupted QCN on a Qualcomm Android device. Always backup your EFS/QCN before touching anything
: Incorrectly flashing a QCN file from a different model or region can permanently disable the phone's ability to connect to any network. qcn imei repair tool
In that case, restoring your (made before the corruption) is legal.
Here are some benefits of using the QCN IMEI Repair Tool:
The industry distinguishes between and hardware boxes .