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:
- lenovo-y70-QCN-FILE: Download
Note:
- use at own risk
How to use Lenovo Legion Y70 L71091 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
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