I'm working on a friend's TomTom XXL.
Navcore: 9.510.1234792.2
Map: United States 955.6805

I patched the map with Fast activate (options 1-4). Now all the roads are unnamed aside from a few main roads.

I did have to wipe the system previous to this because I couldn't get it out of USB mode & the screen started flashing.

pearlheartgtr wrote:Now all the roads are unnamed aside from a few main roads.

Do a re-install.

I think I have it. I loaded the backup and reinstalled the map. All looks good so far. I'm going to use it on my way to work tonight and see how it goes.

Thank you for your help.

...never had these problems with my Garmin Nuvi...