Alternatively, you can use the following direct download link:
Once the software is downloaded, follow these steps to install and set it up: hyt tc780 programming software download link
Ensure you are getting PCS780 for the standard TC780. The TC-780M (mobile/trunked version) often uses a slightly different utility. Alternatively, you can use the following direct download
Attach the cable to your PC and the radio’s side port. Turn the radio on and set the volume to about 50%. hyt tc780 programming software download link