belongs to the series (Professional Series). You specifically need:
Legal and regulatory considerations
To configure frequencies, signaling (like CTCSS), and scan zones on a GM338, users must connect the radio to a PC via the microphone port using a programming cable. The software allows for precise adjustments: motorola gm338 programming software download repack link
Downloading "repacked" or unofficial versions of Motorola GM338 belongs to the series (Professional Series)