A: The final official release was Professional Series CPS R06.12.05 from circa 2006.

: A Windows-compatible version that can sometimes run on Windows XP using specific compatibility settings (like "run in separate memory space").

: If you encounter "No Response from Radio" errors, check that your USB-to-Serial adapter drivers are up to date and compatible with older baud rates. Do you need a wiring diagram

for a DIY programming cable, or are you looking for help with a specific error

Once the software and cable are working, here is how to program a repeater channel (e.g., 146.820 MHz, PL 100.0 Hz):

Before diving into the software, it is important to understand the hardware you are working with. The GM350 is part of the "Professional Series" (often referred to as the "Waris" series in Europe). It is a mobile radio designed to be mounted in a vehicle.