? Updating Maps on Nuvi (free upgrade)

I understand that if I have a unit that was bought AFTER the latest
version came out of City Navigator, I can update the map once. Like
today, I just bought the Nuvi 765T and it has CN NT 2010.20. I know
2010.30 NT is out. However, could I wait until 2011.xx comes out and
update it then, or would I only be able to upgrade one version?

I think you have 30 days from the time the unit first acquires
satelite data to update to the latest maps. I guess if you don't turn
the unit on until the 2011 maps come out, you can update to that map.

Sam wrote:
You have 60 days after it first acquires satellites for one free update.
I updated my Nuvi 855 right after I received it and they came out with
another update a week after that, so if I had it to do over again I
would wait until near the end of the 60 days to update.

Maybe I'm the exception, but with my 265T, I didn't DO anything to get the
update.
I powered it on one day while in the car and it updated itself. I would have
LIKED to delayed the update because mine was only a few weeks old. I
thought - oh good an update - I wonder how often it updates ( thinking -
like virus definitions - that it "just did it periodically")

You did *not* get map updates with the unit sitting in the car.