This is the safest method. Requires a previously saved QCN file from the same device.
: Most versions are reported to run without needing to disable security software, though users should always verify their specific download. Standard Usage Steps : Use a tool like to backup the original QCN file from your device. : Open the IMEI QCN Tool and browse for the backed-up file. : Enter the correct IMEI numbers into the provided fields. Download Imei Qcn Tool V1.0 UPD
To understand the purpose of the IMEI QCN Tool, one must first understand the file format it manipulates: QCN (Qualcomm Calibration Network). Qualcomm chipsets power a vast majority of Android devices. The QCN file contains essential calibration data for the device's radio hardware, including the IMEI, MAC addresses, and network calibration settings. This is the safest method