If you tell me which specific GM950 model you have (e.g., standard or Plus) and what Windows version you are using, I can provide more tailored advice on setting up DOSBox! Programming the Motorola GM950 on Windows 10

A specialized serial (RS232) cable is required. USB-to-serial adapters often fail unless they use high-quality chipsets (like FTDI) and are mapped to COM1.

Double-check that all entered frequencies fall within the exact band limits of your hardware (VHF 136-174MHz or UHF 403-470MHz). Select or Program Codeplug .

Format a USB flash drive as a bootable or FreeDOS drive using utilities like Rufus.

Plug the RJ45 end of the cable into the microphone jack on the front panel of the GM950. Power on the computer first, then turn on the GM950 radio. 2. Reading the Radio (Backing Up)

disconnect power or interrupt the cable during this process.