I updated my DD for the strategy tunes and now I can't get the stock tune to load so I can install the license. It will load any of the other tunes but just not the stock file. I made sure that I had returned the truck to stock before I updated my firmware. I then made sure that it would still load the tunes and it did. When I tried to put it back to the stock tune so I could install the license it says wrong file. I even tried a few of the backed up stock files that I have. Any ideas?