Tool.zip: Tungtata Qcn

Type in the original, official IMEI numbers found on your device’s retail box or rear sticker. Click or Rebuild .

Ensure your phone is detected on the Qualcomm Diagnostics Port (COM Port). Browse and select the repaired_device.qcn file you created. Click to flash the file to your device. Reboot your phone once the process completes successfully. Troubleshooting Common Errors Diag Port Not Found Cause: Incorrect or missing Qualcomm USB drivers. Tungtata QCN Tool.zip

Click on "Open File" and select your .qcn or .dat file. Type in the original, official IMEI numbers found

Are you trying to that has lost its signal or shows an invalid IMEI? Browse and select the repaired_device

Open Windows . Under the Ports (COM & LPT) section, you should see Qualcomm HS-USB Android DIAG 901D (COMxx) . Note down the specific COM port number. Step 3: Run the Tungtata QCN Tool

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.

Check your USB cable and try changing USB ports (preferably use a USB 2.0 port on the back of your motherboard). Reinstall the Qualcomm USB Diagnostic drivers and ensure Diagnostic Mode is truly active on the handset. 2. "Write Failed" or "NV Read/Write Error"