Have not heard of updating any FW(except modems) from Windows OS. Leave the file in a directory if ya wish, boot to a DOS prompt using a system disk, then go 2 that directory & flash FW. U can make a system disk in XP by rt clicking floppy drive icon & choose "Format", then choose "Copy System files"... BTW I have always flashed my LiteON DVD drive this way(I have W98).