BIOS update with bootable CD (Linux)

Step 1 : Download a BIOS file, e.g., 42F1P33.zip and unzip them

$ unzip 42F1P33.zip

Archive:  42BF1P33.zip
  inflating: 42BF1P33.BIN           
  inflating: AFU860A.EXE

Step 2 : Download FREEDOS and copy BIOS files into ...

$ wget http://www.fdos.org/bootdisks/autogen/FDOEM.144.gz
$ gunzip FDOEM.144.gz
$ mkdir /tmp/cdr
# mount -t vfat -o loop FDOEM.144 /tmp/cdr
# scp 42BF1P33.BIN /tmp/cdr/
# scp AFU860A.EXE /tmp/cdr/
# umount /tmp/cdr

Step 3 : Make ISO image file

$ genisoimage -o newBIOS.iso -b FDOEM.144 FDOEM.14

genisoimage -o newBIOS.iso -b FDOEM.144 FDOEM.144
I: -input-charset not specified, using utf-8 (detected in locale settings)
Size of boot image is 2880 sectors -> Emulating a 1440 kB floppy
Total translation table size: 2048
Total rockridge attributes bytes: 0
Total directory bytes: 0
Path table size(bytes): 10
Max brk space used 0
896 extents written (1 MB)

Step 4 : Burn ISO to CDROM...

Reference : http://ubuntuforums.org/showthread.php?t=318789