Sorry to hijack thread but since you're already talking about it... My car has Bluetooth and I upgraded the MMI to 5570, had to do disc 2 twice as advised and the second run took about an hour! So anyway the Bluetooth works but contacts don't sync, I've got an S4 with the latest lollipop android. Anyone got a similar issue?
Also, my car has the phone dock under the armrests in the centre console pocket, this thing,
http://www.ebay.co.uk/itm/Audi-A8-D3...item27fb6e35af
I presume this is where you connect the cradle for your specific phone?
If I remove this unit as I'm not using it and would like to make space in there and get one with no phone gubbins like this,
http://www.ebay.co.uk/itm/Audi-A8-D3...item1e9395f28a
I wonder does this cradle thing need to be still connected up for the Bluetooth to work?? Or will there be any repercussions bar a few fault codes?