Hi…I have a Chuwi vi8, I have managed to delete both the windows and Android OS. I put on Windows 10 tried to download the drivers for it from the link given here. My dekstop computer tells me the winrar file has an error, so cannot get the necessary Win 10 drivers. Just want to return my Chuwi back to Windows 8.1. Have made a bootable Windows 8.1 usb flashdrive but now when I go into the bios boot manager my usb flashdrive does not show. Have reset the bios to optimal settings and tried 3 other flashdrives with win 8.1 still does not show for me to boot off. Any ideas how to get my flashdrive to show.