How to upgrade the new car navigation?

Need to download the required version of the navigation system, car navigation to upgrade the new version of the method is as follows:

Take out the memory card directly in navigation, then find the required navigation system on the Internet, download it and re-import the memory card. It should be noted that if the port parameters of the original vehicle system are embedded in the used system, they can only be updated through the 4S shop or repair shop. Vehicle navigation by using vehicle GPS (Global Positioning System) combined with electronic map can tell the driver to go to the destination conveniently and accurately. With the rapid development of car navigation system, people can not only choose the navigation system as an optional configuration when buying a new car, but also install the equipment on the existing car and even configure the mobile satellite navigation system.