Originally Posted by 2009KVFD976
I as well will be programming one of these. Im looking on ebay under CM300 and the same cable shows up for a M1225. So, the question remains. Will the cable for an M1225 work on CM300?? And vice versa. I already have a cable for the M1225, will I need one specifically for the CM300 or could I just use the ethernet jack and patch cable with a different pinout?
Motorola does not make a one piece cable that will program a CM radio.
You have to either buy a second cable from Moto called a flash adapter, or make your own. Either one goes in series with the programming cable.
A few of us have scratched our heads about this at first.
The cable that Moto says will program this radio is NOT the only cable you need.
I'm not at work, or I could give you the pertinant part numbers.
If you look closely, you'll notice the CM300's mike jack is 8 pin.
The mike jack for a M1225, GM300, CDM750, 1250, etc, and the cable you have, are all ten pin.
Hence, some adaption is in order.