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Double-click the setup.exe or install.exe file. Follow the on-screen prompts to complete the installation.

If using a USB cable, your PC must have the correct CH340 or Prolific drivers installed to recognize the COM port.

with a standard USB cable. You must use a dedicated interface cable that connects to the radio’s accessory jack. TC-780M Programming Software Download

Connect the programming cable firmly to the side accessory port of the radio and plug the other end into your PC. Turn on the radio and set the volume to a moderate level.

Adjust for squelch levels and button assignments.