Hi ive tried to connect up a dension gateway 100 kit,no luck! and now the dice kit wont work with my iphone 2g either with the concert head unit (sportback 55 plate) the concert isnt recognising the kits...?!its not allowing to charge either! could it be the aux-in has been disabled on the head unit,previous to me buying the car a nokia bluetooth kit has been installed..could this have any impact on why the kits arent working,maybe the head was reprogrammed??.....ive booked the car into audi for them to check the head unit it set for a cd changer but there gonna charge half hour labour which is £50 summit !! am i wasting my time or could the concert head be set to not recognise a cd changer connected......shouldnt the head units be set to accept cd changers as default? am also getting a message saying the iphone isnt supported with the kits when i plug it in but am told the kits are fine with the iphone...... have a a broken concert ?? am totally lost to why it wont recognise the kits thanks for any help.