Do the NT530 softwares are more expensive than the NT510?...some places I see it $60 some $70 some $80...Being a bit of a knuckle head, I finally figured out how to add more vehicles to my NT510 Elite.
Mine came with Honda preloaded.
Somehow was thinking its all done through the foxwell assist program on your computer, which is partly right.
you have to create an account with foxwelltech.us
Then go here and buy the software for the make of car you want.
With the scanner plugged into your computer via USB, select the Update option on the main screen, then on your computer, go back into your foxwell assist program signed in with your foxwelltech.us account, go to downloads and refresh, and you should see your purchased software for the additional vehicles.
select it and download, it will update the scanner with the new vehicle.
not overly complicated or straight forward either.
hope this helps someone.