I did see the neighboring thread about openstreets maps, but I think I need even more basic info.

I would rate my tech savvy as above clueless but lower than average.

I recently purchased a new Garmin 530 off Ebay. It seems to work, but it came preloaded with maps of Singapore/Malaysia/Thailand/Philippines, so as a USA cyclist this is not helpful. I downloaded a local route and the device would not navigate.

So obviously I need to download the USA maps to my device. I installed the "Garmin Express" app on my desktop and looked to find an option to update default map setting to North America but there is no option that I see.

Advice??