The GM338 belongs to Motorola’s Professional Radio series (often referred to as the Waris platform). Because Motorola segments its software by geographic region, you must match the software version to your radio's regional firmware: The most common region for the GM338.

Wait for the progress bar to reach 100%. The radio will typically emit a confirmation beep and restart. Disconnect the cable and test your channels. Troubleshooting Common Errors

Before searching for a third-party repack link, you must understand the risks involved.

Plug your FTDI USB programming cable into the PC without connecting the radio. Open in Windows.