Cookmaster

I feel for all who want to upgrade. Regardless of how you do it, you’re dealing with generational PCM/NAVI issues. My 2009 bmw 135 was old school and required hours to update the database and software because it was on DVD format. I had the same experience recently updating my 2013 CD PCM Navi database, only via DVD (4 hrs). The new generation can be done over Wi-Fi/cell or via usb input. I update my 2015 m4 each semester via USB that takes about 45 minutes to complete. The tech drives what you can do with your existing system.

aryork

Wow, went to Crutchfield and this is what they tell me:


Did find this guy who successfully swapped out a PCM 3.1 for a PCM 4.0: