@shezy_optra
Navigation option is not available for general public use in Pakistan.The map Cd has the required info of the region/country in which you are using the vehicle.It holds info of Country Maps,satellite frequencies,authenticated ascess codes.
Map-Cd is usally provided by a company providing navigation service in your country just like mobile phone service providers.It has rights of using the satellite link via registering it self with satellite user rights provider for this purpose.
In Pakistan,there is no company providing this feature.Some U.N vehicles use this feature in Pakistan but Map-Cd used are provided and programmed by their own organization.