Originally Posted by Patricius
Why wouldn't this be a software upgrade? The new iDrive operating won't be contingent on the new buttons, will it?
I'm afraid it will. It's a completely new system, even the supplier has changed. A upgrade would at least require a new head unit (CIC), a new display, the new controller (possibly new center console) and new wiring. There might be even some more electronic components involved.
Best regards, south