Forgot about this but one indirect way to tell if the Head Unit is programmed
for Logic 7
Logic 7 has some different menu's
It has a graphic equalizer and some canned sound modes not present
in the other Sound systems. (when the unit is programed for stereo or Hi Fi no graphic equalizer menu)
There is a maintenance mode where you can read what it's programmed for
to .
Which idrive fo you have ccc or cic?
or do you have pro radio?
http://www.e90post.com/forums/attach...2&d=1260829447
This guy shows how to get to the equalizer in the last half of the video.
compatible firmware in the amplifier is also sometimes and issue.