Originally Posted by Mike Benvo
If BMW was involved and they did suspect foul play (which there is no reason to in the first place), there is potential that they could find out about it. It's not easy though and would require time and money investment on their part.
On major claims where software is suspected BMW can have the system software verified.
This will find any non-BMW software/changes, but it is not something dealers can do or are shown how to do, nor is it something done often by BMW.