Plug the USB into the head unit; the system should automatically detect the update or prompt you via the File Manager App Updates via Play Store: If you are only looking to update Android Auto (the app that manages the connection), open the Google Play Store on the head unit, go to Manage apps & device , and select Update all Critical Precautions How To Update Your Android Head Unit + Apps
: Updates are highly specific to hardware configurations. For instance, some firmware is only compatible with Android Auto Firmware Latest Update 8227l
: Insert the USB into the head unit. The system should automatically detect the update and prompt you to start. If not, go to Settings > System > System Update Critical Warnings Risk of Bricking Plug the USB into the head unit; the