Can I go back to an older version of BIOS on this motherboard?

Are you sure or I risk bricking my motherboard?

I`m doing this because since I update my BIOS sometimes I get random blackscreen and no signal after windows logo..
 
It shouldn't be bios, but if it wasn't doing before and then only thing changed was bios it could be, asus is known for releasing bios updates with problems with ram compatibility. If you want downgrade bios run asus winflash with parameter /nodate or in bios run ezflash and after you get error message saying wrong bios file write on keyboard risky, that should skip it.