| Error Message | Solution | | :--- | :--- | | | Your phone isn't rooted, or the setprop command failed. Try Engineering mode codes (varies by OEM: Xiaomi = *#*#717717#*#* ). | | "COM Port cannot open" | Another program (QPST, MiFlash) is using the port. Close all other flashing tools and restart Tungtata. | | "NvManager: Write Failed" | The QCN is locked. You need an OEM Firehose Loader (prog_emmc_firehose.mbn). Not all devices are supported. | | "ToolZip is corrupted" | Re-download from a trusted mirror. Disable Windows Defender real-time protection during extraction. |
Restoring QCN files to fix "Invalid IMEI" or "No Service" issues. tungtata qcn toolzip install
Changing an IMEI number is illegal in many jurisdictions. Ensure you are only using this tool for legitimate repair of the device's original identity. To help you further, could you tell me: What specific phone model are you working on? | Error Message | Solution | | :---