While I appreciate the credit, I got this from nadcircle on another site (I'd link it, but am unsure of the rules regarding that). He is the one who was able to successfully modify, pack, and sign the apk file. Saw everyone struggling with all this NewCrack.apk stuff. This one is SO much easier (for US at least).
My understanding is that there's a line in version.xml - something like NAVIGON_US in this one, NAVIGON_EU for europe etc with device codes AC and AS respectively.
For canada and uk, it should be about finding the appropriate first two characters of the device code.
Found inside the <productprefix> and <productid> tags.