(Change COM1 to the port number your cable is using)
For professionals who program multiple GM950s, nothing beats a dedicated, ancient laptop.
Because the GM950 RSS was written for slower processors, you cannot simply run it on a modern Windows 10 or 11 laptop. You have two main options:
Motorola GM950 Programming Software: The Complete Guide to New and Legacy Radio Configuration motorola gm950 programming software new
Use a dedicated, slow legacy PC or employ a CPU slowdown utility like Mo'Slo in pure DOS mode.
There is no official "new" 2026 version of the software from Motorola. Solutions involve emulation or specialized programming cables. 2. Best Solutions for "New" Programming Techniques
Here are some tips and tricks to help you get the most out of the Motorola GM950 programming software: (Change COM1 to the port number your cable
Historically, programming a GM950 required an external hardware box called a Radio Interface Box (RIB) powered by a 9V battery, paired with a DB9-to-RJ45 serial cable. This box converts the computer's RS-232 serial signals to the TTL/CMOS voltage levels the radio understands.
100% compatible, no emulation lag, direct serial control. Cons: Heavy, slow battery life, transferring frequencies is tedious.
How to Program Motorola Two-Way Radios (CPS & MOTOTBRO Guide) There is no official "new" 2026 version of
The GM950 does not use standard modern Motorola CPS. Instead, it utilizes:
The situation is a perfect example of classic hardware clashing with modern computing. There is no official "new" software from Motorola. However, by combining VirtualBox, an FTDI USB cable, and verified DOS RSS , you can program your GM950 on Windows 10 or 11 without buying a museum-piece laptop.
The earliest versions of the GM950 software were built for MS-DOS. These utilities interact directly with the computer’s physical serial port and require precise CPU timing.
Depending on the exact cable design, an external RIB or a "RIB-less" cable containing built-in voltage-shifting circuitry is necessary to safely manage data signals between the PC and the radio microprocessor. Setting Up the Environment on Windows 10 and Windows 11
It is crucial to understand that Motorola has not released "new" software for the GM950 series in decades. The GM950 predates the current Customer Programming Software (CPS) used for MOTOTRBO radios.