GIGABYTE GA-X99-DESIGNARE-EX BIOS - F5e

[TheBelcherMan]

Two versions, one directly from GIGABYTE with Above 4G decoding implemented. Dated 1/21/2026.

The second file is modded version with the following changes:

• Exposed the invisible menu below System → Access Level
• Enabled ARI Forwarding + AtomicOp Request Enable + AtomicOp Egress Blocking by default (i it make your system glitchy or audio skipping, or any abnormalities, you can disable it under PCI Subsytem Config → PCI Express Gen 2 settings)
• Increase MMIO High Size from 256G to 1024G
• Bypass Q-Flash Invalid Bios, based on this (If you’re curious, you can ask details here)

List of updated modules:
ME Firmware Ver: 9.1.37.1002 → 9.1.40.1000 (Rebuilt using intel FIT)

Disk Controller

• EFI Intel RST RAID Driver - 14.8.0.2377 → 14.8.2.2397
• OROM Intel RST for SATA - 13.1.0.2126 ← Stays As-is
• OROM Intel RST for SATA - 14.8.0.2377 → 14.8.2.2397

Network

• EFI Intel PRO1000 Driver - 6.0.24 → 6.6.04
• EFI Intel PRO1000 Driver - 6.6.04 ← Stays As-is
• OROM Intel Boot Agent GE - 1.5.43 → 1.5.62
• OROM Intel Boot Agent GE - 1.5.62 → 1.5.90

Inserted Modules:

• ReBarDxe v0.3
• NvStrapsRebar v0.4-rc1

Misc:

• Microcodes updated to the latest