Can someone help me make sense of Navigation DVDs?
 

Hi,

I just bought a used 2006 camry hybrid with an outdated navigation DVD. The part number on the disc is: 86271-53020 which matches ToyotaDIY.

I am looking for the latest navigation disc, and see them posted on ebay and craigslist for a lot less than the dealer. Which disc am I supposed to buy? Gen 4/5/6? is 10.1 the latest data?

Thanks for your help!