Hey
I got it to work....I have lifetime on my Zumo....had to update that first....
Then I tried to use Mapsource to build the Canadian and US maps....but they saved as gdb files....
So...hooked Zumo back up to laptop, and went into files that way, copied the loaded "img" file from there, saved it to laptop....then carried on as per your instructions....so now have the Canadian map on bike....
Going to try to make US map this weekend
Not sure if gupdate.gcd version 5.1 is much different from 4.9, but the 4.9 the other guy posted worked great.
Thanks again