If you are a business or dealer, log into your Motorola Online account. Navigate to Resource Center → Software → Two-Way Radios → GM Series . Download the latest GM338 CPS and any updates.
Check your COM Port settings in the software under "File" > "Read Device." Ensure the COM Port matches the one assigned to your cable in the Windows Device Manager. motorola gm338 programming software download upd upd
: You need a specific RIB (Radio Interface Box) or a RIB-less USB programming cable compatible with the GM338/GM series. ⚠️ Important Caution If you are a business or dealer, log
After updating the firmware (UPD), you must write a compatible codeplug. Old codeplugs (saved with CPS R05.x) will not work with new firmware R06.x. Check your COM Port settings in the software
: A USB-to-RJ45 (8-core crystal head) cable that connects your PC to the radio's microphone port.
: Choose between 12.5, 20, or 25 kHz to meet local regulatory needs.
If you are a business or dealer, log into your Motorola Online account. Navigate to Resource Center → Software → Two-Way Radios → GM Series . Download the latest GM338 CPS and any updates.
Check your COM Port settings in the software under "File" > "Read Device." Ensure the COM Port matches the one assigned to your cable in the Windows Device Manager.
: You need a specific RIB (Radio Interface Box) or a RIB-less USB programming cable compatible with the GM338/GM series. ⚠️ Important Caution
After updating the firmware (UPD), you must write a compatible codeplug. Old codeplugs (saved with CPS R05.x) will not work with new firmware R06.x.
: A USB-to-RJ45 (8-core crystal head) cable that connects your PC to the radio's microphone port.
: Choose between 12.5, 20, or 25 kHz to meet local regulatory needs.
