Motorola Gm338 Programming Software Download Upd Link May 2026

The software is useless without the correct programming cable. The GM338 uses a DB9 (RS-232) serial or a specific 16-pin accessory connector.

If your PC has a physical 9-pin serial port:

Before you look for the software download, ensure you have the correct interface cable. You cannot program a GM338 via a standard USB cable.

Posted by: Two-Way Radio Tech Team
Last Updated: October 2023 motorola gm338 programming software download upd link

The Motorola GM338 is a legendary commercial-grade mobile radio. Known for its rugged build, clear audio, and reliable performance in the VHF (136-174 MHz) and UHF (403-470 MHz) bands, it remains a staple for off-roaders, truckers, and public safety volunteers. However, as this radio is discontinued, programming it has become a significant challenge for new users.

If you have acquired a used GM338, you cannot program it with the modern Motorola CPS (Customer Programming Software) for the XPR or APX series. You need the legacy software: Motorola Radio Service Software (RSS) or the later Professional Radio CPS.

This article provides a verified path to download the correct software, apply the latest updates, and find the necessary hardware drivers. The software is useless without the correct programming

The biggest hurdle with programming the GM338 today is operating system compatibility.

Because the GM338 is "End of Life" (EOL), Motorola often no longer sells licenses for it directly on the main consumer site. If you cannot find it in the official portal, you should contact a local authorized Motorola dealer. They often have archives of legacy software and can assist you in programming the radio for a small fee.

It is important to note that Motorola Solutions does not host this software for free public download. It is proprietary, commercial software. The biggest hurdle with programming the GM338 today

Official Method: To obtain the software legally and safely, you should purchase a subscription to the Motorola Online portal. This ensures you get a clean, virus-free copy and the latest patches.

The Hobbyist Route: If you are a radio hobbyist repairing older equipment, you will often find archives of the software hosted on amateur radio forums and file repositories. A simple search for "Motorola Professional CPS R05 download" often yields results on sites like "Repeater Builder" or various radio scanning forums.

Note: When downloading executable files from file-hosting sites, always run a virus scan before opening them. Radio forums are generally safer than random "warez" sites.