I'm sure this has been covered before but I can't find it.
I've recently purchased a 2005 645ci, it won't play mp3 discs. Now I know I probably need a software update to the CCC and to enable mp2 play as well.
So my question is, if I get a copy of DIS & SSS and the correct lead from one of the sources that are about, can I carry out this software update and enable mp3 play with SSS?
Or do I really have to pay a dealer to do it?