How to flash BIOS

wget http://www.fdos.org/bootdisks/autogen/FDOEM.144.gz
gunzip FDOEM.144.gz
mount -t vfat -o loop FDOEM.144 /mnt/temp
cp 1400_A09.EXE /mnt/temp (Dell Vostro 1400 BIOS A.09)
umount /mnt/temp
mkisofs -o bootable_freedos.iso -b FDOEM.144 FDOEM.144
cdrecord -v dev=0,0,0 speed=4 -eject bootable_freedos.iso