I went this route about 8 years ago: http://www.bimmernav.com/bmw_e39_blu..._retrofit.html I have a 5th Generation ULF and it synchs with every phone I have ever had, including a current Iphone5.
Never got the SMS thing to work...but it is hands free. Not the cheapest solution by any stretch, but oem, nicely integrated and works well.
540 M-Sport package (Canadian market), factory Bluetooth phone kit, factory M-Audio 10" dual voice coil subs, Homelink, M5 rear stabilizer bar, H&R 15mm spacers, Bilstein B14 PSS coil overs, Stop Tech ss brake lines, Akebono Euro Ceramic brake pads, oem Brembo and Zimmerman rotors, Dinan Stage 1 software, Strong Strut front upper stress bar, USA Spec Ipod/Iphone integration.
Last edited by 540 M-Sport; 04-18-2013 at 12:18 PM.