Step1: Copy the upgrade software (IAP file) of the corresponding protocol box to the root directory of U disk, plug the U disk into the USB interface of the navigation host, and confirm that the host has recognized the U disk.

Step2: Click “Settings”

Step3: Click “System” 

Step4: Click “System Update”

Step5: Click “CANBUS UPDATE”

Step6: Click “START UPDATE”

Step7: When the progressbar runs out, Update successed

YouTube Video link：https://youtu.be/5t9B55VPdng