Downloaded and intalled on Zumo, Nuvi and computer this afternoon. Garmin Express version 4.1.25.0 under Vista. The benefit of being behind the times with Windows.
Any idea why it's NTU rather than just the usual NT? I'm guessing it's imaginatively "update".
Something odd though; although I have updated my mac and my 590 with this new map, my wife's mac and 660 LM seem to be happy with 2017.10 and won't update
As I understand it, NTU mapping uses a 16-bit Unicode format for text characters rather than the 8-bit ASCII of NT mapping. Using NTU mapping on a Garmin designed for the older NT mapping does sort of work as long as you only want the first character of every street name displayed.