No one knows the answer?? TT
Please check the following links; they will provide you the instructions on how to update the BIOS on your motherboard. http://downloadmirror.intel.com/18881/eng/BIOS%20Update%20Readme.pdf
Please remember that if the system is not giving you problems, a BIOS update is not necessary.
Which BIOS version are you trying to flash/install on you system?