What specific or phone symptom are you currently dealing with?
Select the healthy .qcn file you downloaded for your specific device model.
: If you already have a known-good QCN backup, the restoration process is straightforward.
Disconnect your smartphone from the computer and restart it. Once booted up, check your network status. Dial *#06# in your dialer application to verify that your original IMEI numbers have been successfully restored and that your SIM card is pulling a network signal. Troubleshooting Common Errors 1. Tool Does Not Detect the Phone (COM Port Missing) Tungtata QCN Tool.zip
Allows users to open and modify existing QCN files to correct corrupted network configurations.
Install the official Qualcomm HS-USB QDLoader 9008 drivers so your PC can communicate with the phone's diagnostic port.
Turn on Developer Options on your phone and enable USB Debugging. What specific or phone symptom are you currently
It is typically used by technicians to "rebuild" or "repair" an IMEI when a device's software is corrupted, leading to "Null IMEI" or "Invalid IMEI" errors that prevent it from connecting to cellular networks. ⚠️ Critical Security Warning
: The modified QCN file is flashed back onto the device using QFIL's "Software Download" tool or similar software. Critical Considerations
Install the official Qualcomm HS-USB QDLoader 9008 and Diagnostics drivers on your PC. Without these, the tool cannot communicate with your phone. Disconnect your smartphone from the computer and restart it
Connect your phone to your PC and open a command prompt. Type the following commands (requires ADB): adb shell su setprop sys.usb.config diag,adb Use code with caution.
Download the from a trusted mobile repair forum. Extract the contents using a tool like WinRAR or 7-Zip to a dedicated folder on your desktop. Step 2: Enable Diagnostic Mode (Diag Port)
When using the Tungtata QCN Tool, users should exercise caution and be aware of the potential risks, including:
The tool serves several technical purposes in the field of mobile repair:
