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    Tuesday, 18 July 2017

    Coolpad Sky E501 QCN File Tested

    Coolpad Sky E501 QCN File Tested

    QCN ( Qualcomm Calibration Network ) is configuration file that contain security part, network config, modem, imei, band on Qualcomm SoC.

    If qcn is corrupted it will cause problems like no network, imei null, baseband unknown even bootloop.

    Now i'll share QCN file for Coolpad Sky E501
    To write QCN file, you need to activate diag mode. Root first and then run this command :
    adb shell
    setprop sys.usb.config diag,adb

    and check in device manager, diagnostic port must exist.

    You can use QPST, QFIL or UFI androidtoolbox to write qcn file.

    Coolpad Sky E501 Good QCN backup

    password  :


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