Follow this tutorial exactly. Missing a step can hard-brick your device.
: Ensures your PC recognizes the phone in Diagnostic Mode.
The QCN file can only be restored via Qualcomm Diagnostic Port. Connect your phone to the PC. Open Command Prompt (CMD) in ADB mode. Type adb shell and hit Enter. Type su and hit Enter (grant root permission on the phone). Type setprop sys.usb.config diag,adb and hit Enter. oneplus 7t pro qcn file
Click on the tab and verify that your device's COM port is listed and active. If it is not, click Add New Port , select your port, and click OK.
October 26, 2023
Once the phone boots into OxygenOS, open the dialer app and type *#06# . Your unique IMEI numbers should now be properly displayed rather than showing blank or null values. Insert your SIM card; within a few moments, the phone should successfully handshake with your local carrier, restoring 4G LTE/5G connectivity and voice services. Troubleshooting Tips
If you go to Settings > About Phone and the Baseband version says "Unknown," the operating system cannot communicate with the modem hardware. This is a classic symptom of a lost QCN. Follow this tutorial exactly
Under "QCN File," click and select the OnePlus7TPro.qcn file you downloaded. Ensure "Allow Phone Data to be Overwritten" is checked. Click Start and wait for the process to complete. Step 3: Reboot
Click → Wait for "Restore succeeded".
If you hit a roadblock during any of these steps, let me know. I can help you find the exact for your software version, explain how to convert your IMEI to Hex format , or guide you through troubleshooting Windows driver detection issues . Share public link
Working with QCN files requires technical tools and can permanently damage your phone's network capabilities if done incorrectly. 1. Essential Tools Required The QCN file can only be restored via