Don't forget that the software won't work without the USB-to-Serial driver (often Prolific or FTDI). Most "connection failed" errors are caused by missing cable drivers rather than the programming software itself. Step-by-Step Installation & Programming Guide
Once connected, the software allows you to customize the following: Hyt Tc-508 Programming Software Download
: Use the software’s "Read" function to pull the current configuration. It is highly recommended to save a backup of this original file before making changes. Don't forget that the software won't work without