i Have Android head unit 8227L . i want to upagard or change ROM of my unit car .but every time i get error message (after unzip firmware and put it in USB FAT32 16gb)"detected fail please check usb and files" I want to install this system :https://xdaforums.com/t/latest-offi...07-2gig-32gig-4-core-rom-from-junsun.4305355/orhttps://xdaforums.com/t/junsun-v1-pro-2gb-32gb-ui3-firmware.4326467/or...Read more