I'm from the Gulf Arab United Arab Emirates and i buy lexus ls460l/2007 from usa , im my car ((hdd navigation system)) includes a special map of America , ihave Arabian Gulf region dvd map and i want to CHANGE AND install it into HDD NAVIGATION but i cant , i fund a special slot for map require special cable and navigation ubdate tool , also that there was no override in my navigation system .. i tired of searching the forums on this topic ... any body can help me (( argent))