B85M-D3H High Sierra Ready

BIOS ROM

1. Place the *.rom in a USB Flash Drive (has been formatted to FAT32)
2. Shut down your PC and press F8 (when booting up) to enter the Q-Flash Utility
3. Select the Rom you just placed, and flash it

EFI.zip

1. Unzip the EFI.zip
2. Mount EFI drive
3. Simply place the EFI folder at the top root of the EFI drive (as the snapshot shown below)