QCN file is a Qualcomm Calibration Network file. It is a binary file that contains all the calibration information for several elements and sensors of a device, such as WIFI, radio, GPS, IMEI, and touch screen.
The QCN file stores the device’s radio & network configuration parameters, including the IMEI number, baseband version, and other important data. If these configurations are lost or corrupted, such as after a firmware update or as a result of other system-level problems, it can be used to restore them.
Download links:
- Redmi Note 12 QCN: Download
Note:
- use at own risk
How to use Redmi Note 12 QCN File:
Enable diagnostic port:
adb shell su setptop sys.usb.config rndis,diag,adb
- Restore using any supported device
- after that repair using any supported tool
Related: