What (Windows 11, XP, pure DOS) are you planning to run the software on? Do you have a serial (DB9) cable or a USB cable ?
The software was designed for MS-DOS or Windows 95/98/XP. Attempting to run it directly on a modern 64-bit Windows 10/11 system will fail. Method A: DOSBox (Recommended) Download and install on your Windows computer.
The Motorola GM350 is a legendary workhorse in the world of commercial two-way radios. Known for its rugged durability, clear audio, and reliable performance in harsh environments, the GM350 remains a popular choice for taxi services, construction crews, event management teams, and security personnel. However, owning a GM350 is only half the battle. To unlock its full potential—changing frequencies, adjusting squelch levels, setting up selective calling, or configuring scan lists—you need the correct . Motorola Gm350 Programming Software Download
Programming a GM350 requires a physical connection between the radio and your computer. The radio uses a front-panel RJ-45 connector (J1) for programming, which connects to your computer via either a native RS-232 serial port or a USB-to-serial adapter.
Immediately save an unaltered copy of this original codeplug to your hard drive. If a write operation fails or frequencies are misconfigured, this backup is your safety net. What (Windows 11, XP, pure DOS) are you
: Note that Motorola Device Manager is intended for connecting Android phones/tablets to a PC and is not suitable for GM350 programming.
| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | | Wrong COM port or bad cable | Check Device Manager. Try a different USB port. Use a genuine FTDI cable. | | “Radio failed to acknowledge” | Radio not powered on OR cable not seated fully | Push cable firmly into the GM350’s rear port until you feel a click. | | “Codeplug too new for this application” | Radio has newer firmware than your CPS | You need a newer version of CPS (e.g., R06.12.05). | | “Checksum error” | Corrupted codeplug in radio | Requires a “force write” or depot reprogramming. | | “Run-time error 13 – Type mismatch” | Trying to run on 64-bit Windows | This CPS only works on 32-bit Windows. Use a VM or old PC. | Attempting to run it directly on a modern
(typically named GM350.EXE ).
This means the software cannot see your cable. Double-check your COM port selection in the software setup menu. If using USB, ensure your USB-to-Serial driver is correctly installed.
: The software usually expects to communicate via COM1 . When using USB adapters, you may need to manually reassign the COM port number in Windows Device Manager. Support How to download APX CPS/RM/Futurecom software?