Root access is highly recommended (and often mandatory) to manually force the device into Diag Mode via a terminal emulator. Step-by-Step Guide: Restoring IMEI via QPST (QCN Method)
: If the codes do not work, open a command prompt on your PC inside your ADB folder and run: adb shell su setprop sys.usb.config diag,adb Use code with caution.
You use the RF NV Item Manager or QFIL modules within QPST to read the corrupted network file, modify the hex values to match your original IMEI, and flash it back to the phone in Diag Mode. qualcomm imei repair tool without box
Repairing the original IMEI number—the one printed on the device box or under the battery—is generally considered acceptable. This process restores the device to its factory identity after a software malfunction.
Disclaimer: The information provided is for educational and repair purposes only. You are solely responsible for your actions and must comply with your local laws regarding IMEI modification. Root access is highly recommended (and often mandatory)
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A simple free application that works on Windows for many older Qualcomm devices. Repairing the original IMEI number—the one printed on
Repairing a Qualcomm IMEI without a box generally follows this workflow:
Modern Qualcomm chips (SDM660 and later) have SBL / abl authentication. Diag mode is locked unless the device is already rooted or the bootloader is unlocked. Many phones reject writes to NV 550 even with SPC.
Open the tool and ensure your phone is detected in Diag mode.
: After the "Restore Successful" message appears, restart the device to apply the changes. Essential Requirements