I have a 2011 Lexus RX450h which 2 different sources say has a Generation 6 SAT NAV. Both these sources state its a dealer only update requiring manufacturer P/N PT219-HDDG6-16 - I'm not sure if this is US Map - we want Europe West.

The first issue is we want a Europe West update and second the dealer wants to charge stupid money for the update from Lexus and also 3 hours to do the install via a laptiop.

Are there any other options?

Any assistance greatly appreciated.