Ummm... I've dl'ed the locked image from Post #2, unlocked it and it works fine in both NA 3597 and AU 3590. I can't replicate the crash & reboot problem you had with your 3580 in the same Surrey Hills location. One of life's great mysteries perhaps, but it does lend credence to the theory that the most reliable images are the ones directly dl'ed from Garmin rather than those produced from a gmap folder. Every image posted here other than the one in Post #25 has been produced from a gmap folder, and almost certainly the same gmap folder which you and i both used to produce an image i.e. the one in Post #1. However the one i made works just as well as my original Garmin dl image.