| Error Message | Cause | Solution | | :--- | :--- | :--- | | | Wrong COM port or radio not in programming mode. | Ensure radio is ON when cable is connected. Re-check COM port in Device Manager. | | "Model Mismatch" | You are using software for a different HYT model. | Download the correct TC780 CPS. Do not use TC700 or TC800 software. | | "Checksum Error" | Corrupted codeplug or faulty cable. | Re-read the radio. If persists, try a different USB cable or port. | | "Out of Range" | You programmed a frequency outside the radio’s band split. | The TC780 comes in VHF (136-174 MHz) and UHF (400-470 MHz or 450-520 MHz). Verify your radio’s band label. | | Software Crashes on Launch | Incomplete installation or missing Visual C++ runtimes. | Install latest vcredist_x86.exe from Microsoft. Reinstall CPS as Admin. |
If you encounter issues while downloading or installing the HYT TC780 programming software, here are some troubleshooting tips: hyt tc780 programming software download new
Note: Be aware that some platforms may offer paid downloads, while others require dealer access. 3. Necessary Equipment for Programming | Error Message | Cause | Solution |