did you make a backup of your files before updating them, so you can restore them and try again? did you follow the instructions on how to update the files correctly? many have done it without issue so it's clearly a user related issue.
Hopefully you can restore your files and attempt to update them again. BTW, I had the same problem, I searched, found the solution and applied with no issues at all. Maybe you can find someone in your area that knows what they are doing to fix it for you?
BTW, what was the dealer doing in the KOMBI module?