Type your original device IMEI into the designated text box.
Developed by GitHub user yogesh120, this is a free, open-source desktop application built with Python and Tkinter. It provides a very basic graphical interface for users who need to quickly view or change an IMEI in a QCN file without handling complex HEX code.
Qualcomm reads IMEIs backward. For example, an digits sequence of 123456 must be converted into its specific byte-swapped hex equivalent before inputting it into the NV manager.
: Ensure your phone's EFS partitions are cleared before restoring an edited QCN. You can clear EFS via TWRP recovery terminal or fastboot commands if your bootloader is unlocked. "Connection Timeout Error"
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Yes. Most QCN editors can load and save .qcn files offline. You need the phone only when writing back to the device.
With this guide and the right tools, you now have the knowledge to install a QCN editor and manage these specialized files with confidence. Happy repairing!
Losing or corrupting this data turns your high-end Snapdragon device into a Wi-Fi-only tablet with no cellular capability. To fix this, you need a reliable process.
: If tkinter is missing, install it using your package manager: Type your original device IMEI into the designated text box
Choose a destination path for your backup and click . This generates your original .qcn file. Editing the File
The QPST NV editor is more stable but less user-friendly than modern GUI-based QCN editors.
: Required on most devices to trigger the diagnostic port. 📥 Step 1: Download the Required Software
If QPST or your QCN editor does not see your device, open QPST Configuration , click on the Ports tab, select Add New Port , choose your active Qualcomm COM port, and click OK. Qualcomm reads IMEIs backward
If you need to restore the file to a device, you will likely need QFIL.
Right-click the downloaded .zip or .rar archive and select .
Once the tools are installed, the workflow generally follows these steps:
The Ultra Qualcomm Tool (often integrated into tools like QCN Rebuilder or IMEI Repair tools) features a graphical interface designed explicitly to parse QCN text fields without exposing raw code. Step-by-Step Installation:
Use QPST Software Download or QFIL to create a backup from your phone in Diag Mode.