i am currently stuck on a screen on my mmi that says ENGINEERING,no matter what i do like hitting the back button to get to the home screen it won't let me out of this screen,it looks like it has to do with factory updates on software for different things on the car,does anyone know how to get out of this thanks

 

Did you try to reboot your MMI

http://audienthusiasts.com/images/MMI_FLReset.png

 

Just brought my A6 in to check for updates. There is one update for MMI. Bring it to the dealer get the new update will problem fix the problem.