Isnt' your problem partly due to the lack of "iPod out" on the iFail5? I'm pretty sure that BMW and Mini are one of the only companies to have truly developed a system around iPod out (hence why Apple felt OK to drop it) and so the iPhone 5 won't work "fully" with BMWs and Minis? Again, I've binned all my memories of this so it's not entirely clear but there's tonnes of topics about it in the "Navigation, iDrive, Audio, Video, Bluetooth, Phone" Forum
I just remembering having an iPhone 5 64GB on pre-order to replace my 16GB 4S and then finding out it wasn't viable with the F30 so I cancelled my order and got a 64GB 4S of Fleebay, brand new, for £300
