I am no expert on the idrive or coding but when people change to hi
fi there are 4 or 5 files that have to be changed for the idrive instead of the one
file for the pro radio.
so I removed the $676 from VO from CAS, I recoded without the .MAN, so basically I restored it to stereo.
Then I re-added $676 to CAS and FRM (with FW_WRITE), and then (recoded the CAPPL/CTUNE/CGATE/CAUDI with default.)
This is to point out
recoded the CAPPL/CTUNE/CGATE/CAUDI
chances are if you were to look into these files you would
find a line that say USB nicht activ somewhere. becareful of the spelling
of nicht activ not sure if its right but all you have to do is remove nicht.
From
http://www.e90post.com/forums/showth...&highlight=676
http://www.e90post.com/forums/showth...2#post23398952