Do you have a VCDS scan from when it was working? The hardware / software versions in it would be helpful for checking things.

Totally different car, but like this showing various version info:

Code:
Address 02: Auto Trans        Labels: 02E-927-770.lbl
   Part No SW: 02E 300 044 D    HW: 02E 927 770 AE
   Component: GSG DSG         081 1404  
   Revision: 04608010
   Coding: 0000020