I'll try out your new forum. I have a Garmin 260W. It's a few years old but I have lifetime updates. I don't use it a lot. ( I don't really go anywhere ) I bring it out to the car and plug it in just to use it. Anyway I updated it a week or so ago. I just plugged it in to use it and did actually use it to take a short trip. Anyway the thing seems to have gone stupid. First it came out speaking Afrikaans??? I fixed that easy enough but the voice is just different....more halting. Anyway I knew the general area I was going just not the exact location. I was forcing it to take my route cross-country instead of the highway figuring when it got close to the area it would readjust. Nope. I was about a mile from my destination and it was still trying to U-turn me. Is there another setting I am missing that may have gotten "updated" amiss?

 

I wonder if the update you used was the correct one.
I know someone with a different model Nuvi who updated and the only change was with the maps.

I checked here and they have a choice of 16 different update options.
There should be a menu choice that lists the map and update version.

 

Also set the GPS to shortest distance or fastest route. Yours may be set to another one that will take you cross country. I have a Garmin 1450 LMT with the lifetime updates, and haven't had such a problem. You need to get the right one as Greg mentioned. It may be trying to get you to Africa via a land bridge

 

I forgot about the settings for fastest route, no tolls, etc. Next time I plug it in I'll dig deeper. As for the updates I seem to remember there wasn't a lot of choices... just a basic update