Allows users to load an existing QCN backup and modify the internal IMEI fields to match the device's original hardware ID.
: Often used alongside other tools like QPST (Qualcomm Product Support Tools) or UMT (Ultimate Multi Tool) to flash the repaired file back onto the phone. download link imei qcn tool v10
Modern smartphones from Samsung, Xiaomi, Oppo, and others include security mechanisms (such as Samsung’s “IMEI certificate patching” or Xiaomi’s RSA protection for IMEI writes). On these devices, simply restoring a QCN file may not be enough – the modem firmware actively checks the IMEI against stored certificates, and a mismatch will cause the network to reject the device. For such phones, much more advanced (and often paid) tools like UMT Pro QcFire or Octoplus Box are required. Allows users to load an existing QCN backup
The modification of an International Mobile Equipment Identity (IMEI) number is subject to strict legal regulations globally. On these devices, simply restoring a QCN file
Click the "Write", "Repair", or "Start" button. Keep the device entirely still. The tool will patch the NV items and display a "Success" or "Process Completed" message.
Disclaimer: This article is for educational and repair purposes only. The author and publisher are not responsible for any illegal use of this software or damage to your device.
Click and select your newly saved rebuilt_network.qcn file. Click the Write QCN button.