Load the from your downloaded firmware package. Select Format + Download and click the download button.
: Connect the USB to the head unit. Navigate to Settings > System Info and tap the Android Upgrade or System Update button. yt9213aj firmware update patched
: Format a USB flash drive to FAT32 . Copy the firmware files (usually including a boot.img or a large .zip file) to the root directory (not inside a folder). Initiate the Update : Plug the USB into the head unit's primary USB port. Load the from your downloaded firmware package