A Land Rover MKIII won't load the BMW software - ask me how I know.

Or let's say, it won't do it by just changing the boot mode to BMWC01S. I've been some comparisons between the LR/RR OS disk and the BMW OS disk. I wonder if it can't be tricked into loading the software by swapping some of the files. My current problem is how to set the boot mode back to LROC01O so I can get it back to a working state to try a few things.