The QCN file extension usually contains ESN, MEID, IMIE, parameter and phone settings especially problems on the network, for backup and restore file extension QCN you can use QPST Tool.Added: - support SM-T585C (Flashing, Read/Write EFS, Backup/Restore CERT, Unlock, Repair, Patch cert, reboot download/recovery) - support SM-C5010 (Flashing, Read/Write QCN, Read/Write EFS, Read/Write SEC, Reset FRP(TEST), reboot. Repair Imei Redmi Note 5A 2/16 Restore Qcn Backupan tested satu malam garap cuma karna imei hilang silahkan bagi yang membutuhkan file ini sudah di coba sebelumnya cukup restore dan tested tanpa harus isi imei ulang.