Tomtom GO 720 GPS Receiver "map continents countries" Questions

I paid for a new up grade for U.S. Maps for my Tom Tom 720. IIt would not down load because of not enough space. When I turn the GPS back on. it was set on another country Gaum. How do I get it off? ...

My Garmin nuvi 205w series seems out of date with regards to one-way systens, Mototaways etc. Brought, but, not registered(due to lack of info)'7.11.09. What do I need to do, & is it poss to speak