its true.. every dealer that provides the truck with the nav option has the maps to that specific country (atleast thats how it is in the middle east) All trucks w/nav sold through the dealers here in the middle east have middle east maps.
Now about that truck with the US maps.. dont bother going to the dealer they wont help you at all.. i've had the same problem for 2 years now been to the dealers in kuwait, bahrain and dubai.. they wont or cant do it.. i have no idea which one.. not one person at any of the dealers tells you the same thing. One claims the US spec trucks have totally different wiring harnesses and it cant be done even if you order a new head unit from the dealer.. the other says you can change the SD card but we cant order it and one other guy tell me it has to be a specific SD card and they cant tell which one and one even told me there isnt an SD card at all its programmed in the head unit..etc.
and as for the SD card one guy at a 4x4 shop in dubai claims to have changed the US maps to Gulf maps.. emailed the guy and even went there to talk to him ..he never replies and is never at the shop.. basically a dead end..
so far im looking to replace the oem unit with an afermarket unit w/navigation but i dont know which one fits best and maintains a factory look and works with the factory controls (ac, steering, camera etc)
basically thats it.. and if you find a solution let me know..