I have installed a few maps and get errors like, Cant authenticate maps after installing the image file to my unit. I am generally after some good topo maps, 4wd tracks and streets and roads in Australia. Can anyone advise me (point me in the right direction - so to speak) as to what maps I should attempt to download, that will assist my needs and work on my unit?
My unit is a Garmin Oregon 400t
Regards
Jason AZZOPARDI:bo_mini: