To upgrade the car navigation system by itself, it is necessary to start the engine and connect the electronic system of the whole car. The specific operation steps are as follows:

First, open the driver's door.

Second, step on the brake pedal of the car and prepare to start the engine.

Third, press the one-button start button of the car.

Fourth, the instrument lights of the car are all on, which proves that the engine has started.

5. Press the Enter key next to the multi-function steering wheel and hold it for 10 second to complete the upgrade.