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Backup EFS With Umt Box or Nck Pro ( edl mode i.e test point) OR FOLLOW THE GUIDE BELOW
CONNECT THE DEVICE
Connect the device to the PC via USB cord while in Diag mode
Launch QFIL. The device should get detected as Qualcomm HS-USB Android DIAG 90ID
Click Tools
Click QCN Backup Restore
The QFIL QCN backup restore dashboard should open
Click Backup QCN
Wait while QFIL extracts the device's QCN
You should get a Backup QCN Succeed message once completed
Open the QCN File path and you should find the .qcn file
With the device still connected in Diag mode,
click Browse
Highlight the .qcn file and click Open
Click Restore QCN
Wait while QFIL restores the QCN
You should get a Restore Succeed once done
Important Notice
Diag mode is different from EDL mode, don't mix them up
You may download QFIL as a standalone or QPST (which comes with QFIL and other tools
If QFIL doesn't show the device as Qualcomm HS-USB Android DIAG- 90ID (while connected and in Diag mode) then click Port and manually select
Its important you only restore a QCN backup made from a working phone of the same model to avoid brick
Flash Infinix X623 Special Firmware with SPECIAL Tool
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