Well I've had the update done to the infotainment and it seems to have borked the sd card and usb slot 2.
Another owner said the update killed his SD card by, somehow, registering it as being constanly write protected and so the car would not access it.
I went to use my SD card (that is always left in the car) after the update but the system said it did not contain media files. I plugged it into my Macbook and all files are still there. I'll try reformatting it and I'll also try a new card.
...Hope this is all I need to do...