Hi guys I've bought an MMI connector for the phone s3 and its not showing up on the source screen. It's charging my phone but that's it I can't play music. On the eBay webpage where I bought it it says compatable for audi's 2009 onwards and mines an 07 plate a6. It says version 3 as well. By Anychance could my stereo system be an earlier version like 2 or something and how can I find out and maybe update it. Thanks for looking guys hope you can help me out