I dug into the MFT when I had my 2012 Focus.
We were able to decompile the system, and redraw a lot of the flash files that hold the graphics for the screens. The problem we had, we couldn't trick the system unto taking the update. Nobody could figure out the algorithm for the secure key to mimic a maintenance upgrade.
Last time I checked, the other guy helping me gave up as did I.
Sent from a mobile, I think.