Have Bluetooth and have the OEM iPod Retrofit they offered (replaces CD Changer and puts a cable in the glovebox).
Last service I asked but just got alot of blank faces and "your car has the current software version for it"
Originally Posted by Jose_JN
If you have old style chime, it is not enough changing the KOMBI code, you have to change the Head Unit with one newer (from 09/07 or after)
I don't know if it is possible to flash your current HU and install a new firmware.
If you don't have neither bluetooth nor USB you better buy one with them built-in like mine.