The standard advice is no you should not UNLESS you are having problems that you have GOOD REASONS to believe will be resolved by the new BIOS. Not hope, not possibly, not maybe, not "well, it can't hurt", etc.
Those good reasons might come from a specific mention on the Asus site that a new BIOS solves issues X, Y, or Z. Or possibly solid research on the net. But not guessing/hoping.
The risk includes the possibility of having to buy a new motherboard if the flash doesn't go well----power failure, you make an incorrect decision due to lack of experience, etc.
BIOS flashing problems aren't as easily recovered from as driver updates for example. "Rolling back" to an older BIOS may not be in the cards at all.