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I say it depends on what was actually updated in 11.1.. if its worth it (or important) to you, then do it.. but for many people, its probably not worth it

Here's the release notes for 11.1:

http://www.lexusnavigation.com/pdf_docs/2011_Release_Notes_GEN5_GEN623092011144147.pdf

Something which they dont mention are the points-of-interest and what actually gets updated aside from the actual maps (for example, hardware firmware updates, updates and new POIs added, POI categories, etc)

I know the Honda/Acura updates used to include firmware updates occasionally. I didnt update for like 4 or 5 years, but it was a pretty big difference when I did update (faster operation, new POI categories), not to mention the area where I live did have lots of new roads and developments over the course of 4-5 years
I usually wait 3-4 years to update. The only reason people update sooner is if they have moved in a new house in a new area and they weren't on the original distribution.

Now iff 11.1 would unlock the system so you could use it when the car was in motion if you say "I Agree" to the dangers. Like Honda, then it would be worth the upgrade.
 

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:)
So just buy the Nav bypass and have it installed? I love mine! =]
What does that cost? $185 plus $150-$200 installation ? Right now it is okay for me to pull over for a nav destination and on the phone I can dial through voice dial or previous history-- but not contacts list ..go figure ..and my phone usage is minimal. If I understand you correctly Dozier42 you have a much more legitmate need for nav addresses on the go and phone numbers dialing --different computer clients each day.:)
 
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