Here is an updated/modded BIOS based on the Gigabyte GA-Z97X-Gaming 5 Beta BIOS version F8b (Obtained from Gigabyte Support - Date 08/24/2018).
This modded BIOS contains the following updates:
Disk Controller:
EFI IRST RAID for SATA: 13.5.0.2164 → 14.8.2.2397
OROM IRST RAID for SATA: 13.5.0.2164 → 14.8.2.2397
Video:
EFI GOP Driver HSW-BDW: 5.5.1032 → 5.5.1034
Network:
EFI Lx Killer Network UNDI: 1.1.0.3 → 1.1.0.13
OROM QCM-Atheros PXE: 2.1.1.1 → 2.1.1.5
Updated CPU Microcodes.