The HYT TC780 uses a or Silicon Labs CP210x chip inside the programming cable. Windows 8, 10, and 11 often fail to auto-instate the correct driver.
First, a hard truth: Unlike open-source projects or consumer apps, professional radio manufacturers restrict CPS distribution to authorized dealers and service centers. hyt tc780 programming software link download
Have questions about specific frequencies or setting up repeater offsets? Let us know in the comments below! The HYT TC780 uses a or Silicon Labs