Need help with AVIC-S1

[coogan]

I inhereted a AVIC-S1 mostly because its a piece of junk and the inlaws couldn't figure it out so they bought a Garmin. I am trying to get the navngoigo8 working. I got it loaded but it only has a UK map. I downloaded the North America maps but they are a pak file not an fbl file so they are not recognized.

What am I doing wrong ?

I aso tried miomap but it won't load

I've spent a whole day on it and I need help before I smash it just out of spite