There is no need of that winbond chip..
You have asis chipset but You didnt tell which make tell your MOBO make here . EXAMPLE:ASUS,MSI, JETWAY,GIGABYTE or so.....
and the model no. or only company also can do..
yes...there is one bios update setup which can be installes as a general software installation in any OS.Just download the appropiate setup from the motherboard manufactures website.