ASRock Z390 Phantom Gaming 6 BIOS 4.20 Feb 21, 2021
... update BIOS, please DO Not power off during UEFI update. - After finishing upgrading the BIOS, ... update BIOS. Please DO Not power off during UEFI update. - After finishing upgrading the BIOS, it shows "Press Enter". Please press “Enter” then reboot. - After system restart, press [F2] ...