Oops, I have the "Professional" system or at least that's what the head unit says. I think my E46 might say "Business"
How do you know if you have the "upgraded" Professional? What year/build date is your car?
In any event, I believe my system is really good for a (base?) factory one.
http://www.e90post.com/forums/showthread.php?t=657255
Thanks....
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'18 340i xDrive EB/Dakota, 6-speed manual, M-sport
'02 325Cic vert AW/Montana leather, 5-speed manual, premium/removable hardtop
'93 850Ci Oxford Green/Parchment, auto
'71 Buick Riviera, 455 V8 land yacht