—like a lockpick. It becomes illegal based on intent. This article does not endorse IMEI changing for fraudulent purposes. Always restore only the original IMEI assigned to your device.
This is the "official" suite used by technicians. It includes and Software Download , which are the primary utilities for backing up and restoring QCN files. Imei Qcn Tool Download
Used to manually find and replace IMEI strings within the .qcn file. How to Use the IMEI QCN Tool —like a lockpick