The specific operation is as follows:

1. Search and download the latest version of the lazy bag on the Internet, and find out the port number and baud rate of the navigation version.

2. Find the Naviconfig.dll file in the original package, download a port modifier, and open it to view the port number and baud rate of the car navigation.

3. Find the corresponding file in the newly downloaded map package and open it with a modifier.

4. Modify according to the above parameters. After modification, copy the new map package to the map card.

5. Insert the map card into the vehicle navigation, and it can work normally. The map has been successfully changed.

Extended data:

Maintenance methods of vehicle navigation:

1. After use, turn off the vehicle navigation first and then turn off the engine. Although it is more convenient not to turn it off, it is easy to damage electronic components after a long time.

2. Don't let the navigation screen touch sharp objects. At the same time, try to avoid the sun exposure of the center console. The large temperature difference not only affects the service life of navigation battery, but also affects the touch sensitivity of LCD screen.

3, as long as you pay attention to cover the protective cover in time, you can effectively prevent dust from entering. The optical disc laser head belongs to wearing parts, and the price is relatively expensive. If damage occurs, it should be handled by professionals. You can clean the buttons and knobs on the panel with a small cotton swab.