My CR-Z is from 2010 and has 6M Transmission.
I bought it some months ago so I do not know much about those details. Could you be more specific about what those mean?
EDM European Domestic Market
JDM Japan Domestic Market
USDM United States Domestic Market
In the US we have (had) three trim levels. These levels affect radio capabilities. There are other differences having to do with headlights and DRLs etc.
Base has less Blue Tooth than the other two and no Sub Woofer
EX has some more capabilities more wattage and a Sub Woofer( with weird separate amplifier)
EX with Navigation same as EX but with Navigation, Blue Tooth streaming and is touch screen radio.
In 2016 all radios have touch screen and some other options were shuffled
Other countries have different Trims( GT etc) and option packages available like Glow Pack and glass roof etc.
When talking about a particular CR-Z especially in regards to ICE ( In Car Entertainment) you need to tell us what country the car was built for and what ICE is currently in it as this affects what wiring and trim kits work. Right Hand Drive Versus Left Hand Drive etc.
I hope this helps you help us.