2015 A3 8V MMI Upgrade from Non-Nav to Navigation

[sanrivera]

I am located in the US and recently purchased a 2015 A3 8V with the non-nav MMI unit. I am looking to upgrade to add navigation.

The unit I am considering purchasing the main unit, navigation control unit with touch pad, high resolution display and GPS antenna.

1) First and most important - do I need to physically upgrade the main unit in order to activate nav? Someone has mentioned that I do not need to purchase a new main unit.

If I do need to upgrade the main unit:
1) Does anyone have any experience upgrading the A3 8V? Can you please help with the steps and installation process?
2) Do I need to visit the dealer to re-program?
3) Do I need any additional parts?
4) Can Audi Connect be used?

Separate question:
Since I already have the MMI unit, can I add a backup camera to the system such that it is visible on the LCD?

Please help!! It is much appreciated!

Please excuse my newness to the forum!

 

[sanrivera]

I should add that the US just launched the 8V A3, but it is essentially the same car launched in Europe as the 2013-2014 models.

So, anyone with experience or know-how regarding adding nav to the 2013-2015 8V A3, please comment!