i was just going off what i was told . I got the system for a good price about 2 months ago and just got around to mounting it all in my tractor . So figured i would do the update . Not a big deal either way  would have been nice to have omni unlock but not a big deal it doesn't . i have a ez guide 500 that i prob will need to update that is unlocked i don't want that wiped off if it does  clear it all .