I just bought a 2012 Q7 S line and I've been trying to find out a little more about the MMI system currently installed as I'd like to get the Navigation working (Navigation System not available) and maybe some other retrofits carried out but the Version Information page list's it as BT_EU_P0054_D1 which according to the MMI wikipedia page is "Shipped with 2011 Q7 / aka MMI 3G LowII" I can find almost no hits for MMI 3g LowII when I'm searching for stuff and almost all the MMI version pages list versions starting with BNav, Hnav or HN+.
It has Nav buttons on the MMI controller unit and steering wheel but no Aux port or dvd in the glove box. Also the hidden green menu won't come up when long pressing the setup and car buttons.

Does anyone know if this is a weird one off system or am I missing a software upgrade or something?
Is 3g LowII the same as basic?

Thanks