My factory GPS had not been upgraded since version U93 which was 2012, when I bought the car. This was causing many missing roads and entire subdivisions. I contacted the dealer about upgrading the Navigation DVD and the amount they quoted was insane. I only wanted to upgrade the DVD not the entire head unit. I found this one on eBay for $11.89 including shipping. I was skeptical and wasn't going to share it with all of you until it arrived. I swapped the disks this morning. Amazing difference. Version U98 is 2017's updated version. I am a happy camper. From the listing, I see that the seller still has 3 left and he's sold 53. I am not the seller. I do not get a commission. The link is not an affiliate link. It's just a simple link on eBay to the product. New 2010 2011 Toyota Prius 2017 Navigation Map Update DVD Gen 6 16.1 U98 gps . | eBay
I found this one that is U99 which is 2018 for about the same price. NEW 2010 2011 Toyota Prius 2018 Navigation Map Update DVD Gen 6 17.1 U99 | eBay
