As MechKB says: the most important question is "why do you want to update it?" It's unfortunately the case that many people feel they always have to have the latest version of everything - drivers, for example - but only because it's the latest. Are there features/functions that you can get from a newer BIOS that you really need? Is your system unstable, or do things not work as they should? If your PC does what you need it to, and is reliable, I would urge you not to upgrade the BIOS. It will likely get you nothing tangible in terms of benefit - and in my (limited) experience, flashing the BIOS is one of the best ways known to man of potentially turning a decent PC into a brick.