Welcome to the forum!
Before doing ANYTHING, make a full Explorer, not Home, backup of your unit's contents. Ensure hidden files/folders are showing.
Check what firmware and map you have installed. To find out the firmware version, tap the satellite bars. The next screen shows the version of the firmware installed. Now, tap the version number and the next screen shows the map installed and version.
The latest map is North America_2GB, 8.15. If you don't have that, you are entitled to the latest map guarantee within 30 days of first connecting the unit using Home's software.
But, you won't be offered ANY version 8 maps if your firmware is not at the v8 level. If it isn't, when you connect to Home, you should be offered the latest firmware. Version 8.3 DOES have problems but you can install it, get the latest map, and roll back the firmware to a lower level v8 at a later date.
It appears to be very close to the time that a map higher than 8.15 should be offered; consequently, if I were you, I'd wait a couple of weeks to try to get the latest map if you don't have 8.15 installed now, cuz you only get one kick at the can, so to speak.