Buddy,
He doesn't say how to switch between maps, what it "says" is to find out "if" it has an uprev tune on it to follow those procedures, so it was read correctly. If you can't contribute something positive please refrain from posting at all..thanks.
To the instructions that were given, they were followed and it does indeed have a n uprev tune, but how do you switch between the maps and know which on you are in; this was "not" answered..
