: A specialized programming cable (P/N PMDN4077A ) is required to connect the radio's side connector to the computer's USB or serial port.
: For backlight and alert tone settings. 4. Writing to the Radio motorola rvn5194 cp185 cps r02.06 programming software
-> This means your radio firmware might be too new for version R02.06, or you are trying to use this software on a different Motorola radio model. : A specialized programming cable (P/N PMDN4077A )