Run "BIOS.bat" to flash BIOS in DOS or Windows x86/x64 OS environment.
If you have Windows Vista installed please go directly to the x86 or x64 directory of the unzipped bios update and execute the .exe file within as administrator by right clicking on it.
If you have Windows XP installed with bios setting "SATA controller=IDE" please make sure to set this value again in the Main menu of the updated bios because all values apart from the security values are set to default after bios update. 
