Motorola Gm338 Programming Software Free |work| Best -

Connect your programming cable to the microphone port (or the rear accessory port, depending on your specific cable setup) of the GM338. Turn the radio on. Step 3: Read the Radio

Maintain uninterrupted power and cable connectivity during this process.

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Check your PC’s "Device Manager" to see which COM port (e.g., COM3) the cable is using.

Older variants require a physical hardware box (RIB) paired with a serial (RS232) cable. For simplicity, stick to a high-quality USB direct cable. 2. COM Port Drivers