I had no instructions. I fired it up and found out how to see some things. I also inadvertently deleted the firmware on my nav so I don't recommend that approach.
I am computer literate to the point it doesn't scare me to hit a button and see what happens as I can usually figure it out, but am also an Apple fanatic. I was windows based for many years but have tried to forget as much of that knowledge as possible so that has hampered progress.
There is a INPA BMW based forum that is helpful, even for the loading of the software. I have yet to ask questions as I am sure with the depth of the threads I have read what I need is somewhere there if I can figure out the right search words. This is the one I have been going:
BMW forum. Diagnostics, coding, programming, repair BMW vehicles. - Powered by vBulletin The were lots of results from my Google search so I don't know if this is the recommended source for info though there is lots there.
Be patient when loading the software. It took a long time for some parts of the load to initiate, enough that I thought it was not working and ejected the disc and started over. For some loading the software has been a breeze and obviously by all the load questions on the INPA forum it has been a bear for many others.