I ran the most recent update, and now I only have Canada, Mexico and a few other countries. USA is gone. When I try to change the map, only Canada and Mexico are listed. Reinstalled multiple times to device and SD card, no change. The software is clearly broken, as indicated by others with the same problem. So for the love of god, don't suggest reinstalling, it doesn't work.
I'm posting this thread to hopefully gain some visibility to this issue and get Garmin to fix it.
Same issue as this thread:
forums.garmin.com/.../nuvi-1450-usd-lost-us-maps-when-updated-with-garmin-express