I have a 2005 and I'm thinking about updating my NAV DVD. I found one on Craigslist for $70 and was wondering if anyone else knew of this update. It says "gen4 10.1 for 2012".
The latest version of the Nav software is 11.1 which has been available since around October 2011. I believe it costs around $150 from a Toyota dealer...it's not unknown for people to make copies and sell it for anywhere from $40 on up.
