Open Windows Device Manager and expand Ports (COM & LPT) . Note the assigned COM port number (e.g., COM3).
Click the icon on the toolbar, or go to File > Write Device .
You cannot program the radio via a standard USB cable alone. You need: Programming Cable:
Motorola Solutions officially distributes software through their Official Portal: Access the Motorola Solutions MyView Registration: motorola gm338 programming software download upd upd
The Motorola GM338 is a robust, conventional, and trunking-capable mobile radio that remains a staple in commercial and amateur radio setups due to its reliability and extensive feature set. To unlock its full potential—including channel programming, signaling setup, and feature customization—you need the correct .
Ensure your GM338 is hooked up to a stable 13.8V DC power supply during the entire read/write process. Power loss during programming can brick the radio permanently. 4. Step-by-Step Installation and Update Guide
Check and select Windows 7 or Windows XP (Service Pack 3) . Check the box for Run this program as an administrator . Click Apply and launch the installer. Hardware Required for Programming Open Windows Device Manager and expand Ports (COM & LPT)
Navigate to > Preferences or Set COM Port to select the active port assigned to your cable. Click the Read Device icon or select Communication > Read .
You are likely using the wrong regional version of the CPS (e.g., trying to read an Asia-Pacific AZ radio with North American AA software). Verify the model number string on the radio chassis label.
This occurs on newer Windows 64-bit systems. To fix this, ensure you are running the software strictly as an Administrator. Alternatively, you may need to register missing .dll components manually via the Windows Command Prompt or run the software inside a virtual machine running Windows 7. "No Response from Radio" (Error Code) You cannot program the radio via a standard USB cable alone
Reconnect the radio, reload your saved backup codeplug file, and attempt to write again.
Do you know the exact or region of your GM338 radio (found on the back chassis label)?
Here’s a concise, informative piece regarding the Motorola GM338 programming software and firmware updates.
Expand the section to identify which COM port number your programming cable is utilizing (e.g., COM3). Launch the Motorola CPS software.
The selected COM port in the software does not match the Windows Device Manager assignment, or the USB serial driver is faulty.