what is meant by service combination?

What format do the map files need to be, and where do I need to copy them to, I'm not able to d/l the linked map files above but have the newer maps which are .fbl files which I've placed in "map" folder in root of "my flash disk"

can perform this off any firmware or do i need to be a specific version ebfore doing this?



and what happens if you don't do a backup and sht messes up...lol what is the next step? O: