: Connect the programming cable to your PC and the GM338 microphone port. Power on the radio using a stable 13.8V DC power supply.
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | "Cannot find Comm Port" | Driver not installed / Repack is 64-bit incompatible | Run the CPS in Windows XP SP3 compatibility mode. | | "Codeplug too new" | Your radio has newer firmware than the repack expects | Find a repack of CPS R06.12.05 or higher. | | "Serial number mismatch" | Incomplete crack | Run the "keygen" included in the repack or use a patched .exe . | | Radio stays on "PROGRAM" | Write interrupted or corrupt data | Force power cycle (unplug DC). Re-read the last working codeplug. | motorola gm338 programming software free repack
: Open your PC's Device Manager to confirm which COM port (e.g., COM3) the cable is using. In the CPS software, go to File > Setup > Communications and select the matching port. 3. Programming Steps MOTOTRBO Customer Programming Software (CPS) : Connect the programming cable to your PC