Sometimes happen that you might not read firmware update instructions properly and mistakenly you have selected Bose system to be updated too..
in result your bose audio might not work properly (only in MMI 3G, in other MMIs everything should works fine!), subwoofer might not work as well as rear speakers.
Instead of going to VAG specialist or Audi dealership and spend quite a lot of ££££ you can fix it by your self!
What you will need?
Now from VCP:
Go to the Guided Functions
Now in right list Module / Moduły please select Apps.
and you will see new content in main windows
In main windows Select: Upload parameter data and click Next >
Now just click Next and Next
In next windows click on to Open ZDC file.
Please select BOSE zdc file and click to Open
Now wait a few seconds to load up the files
Ok now when the ZDC file is loaded up, in ECUs select: 47 – Sound system then in Data to upload select your car variant and click to Upload selected data button.
and that’s all, your bose audio system should be restored now =)