I downloaded both NT and NTU img files for Europe. The 2598 will not read either of the maps, it states that the maps are locked or corrupt. I did try both img files in my old 780 and both maps were readable. Not sure how accurate the NTU is in the 780(as per prior threads), but it shows that both are unlocked except they do not work in the 2598.
Does anyone have or know of a solution to this problem?