Before you start to install the USB hub, please check the car firmware version, if it is lower than 70…, please update the firmware version first, there is a PDF manual in the folder, please read it, you can't abort the operation during the update process!
CarPlay-AndroidAuto Installation guide
https://drive.google.com/drive/folders/1py59HsES0DGyTd-4iIwjt1TUJh_zimZR?usp=sharing
Firmware MCU upgrade file
https://drive.google.com/drive/folders/1FtKtz4HU0V2sL0DUYUxp8Hui7jIf4iWf?usp=sharing
https://drive.google.com/drive/folders/11u5OqqKLLiFBqOqz1wisAoTtZoaUqHBu?usp=drive_link