Introduction to the upgrade of Mai Rui Bao's on-board system: 1. You need to open the home page of car navigation and click on the "All Applications" icon. Will jump to a new interface, there is a "Settings" option in the upper left corner of the screen, click to enter; 2. Turn on the "Wi-Fi" button on the left and select an effective wireless LAN on the right for wireless connection. Slide down the main menu page of "Settings" and select the "General Settings" button in "System"; 3. The "General Settings" submenu will pop up, just click the "System Information" option; Select the system that needs to be updated, that is, click the system you are using in "Default Settings", "Android Upgrade" and "MCU Upgrade", so that you can update the car navigation yourself.