Lastly, this has only been tested on the CyberpowerPC/ASrock B360M Xtreme board (not the B360) found in the GXiVR3800WST model, although the ASrock B360M Xtreme board was used in other models; I'd suggest confirming with HWiNFO. Why update the BIOS to 4.20, first, it was recommended...
lastly, it's likely that CyberpowerPC will void your board(s) warranty, although you can convert back to the original OE BIOS if needed (I'll write a follow-up on the reversal) and finally the name of the board will change to "ASrock B360M Pro4". ...