Mak3rde/AsusX99A-II-RezisableBar

Asus X99-A II with unlocked NVram / modified pcibusdxe / injected rebardxe

AsusX99A-II Working RezisableBarwith / Smart Acces memory with Unlimited Size.

This wouldn't be possible without the information gathered from multiple sources and the help of icymiguel420 (Miyconst Hardware Discord)

Sources:

Resizable BAR on LGA 2011-3 X99 – how to enable and get extra performance

• https://www.youtube.com/watch?v=vcJDWMpxpjE ( Discord: https://discord.gg/F5qMzdsQGX )

xCuri0 / ReBarUEFI

• https://github.com/xCuri0/ReBarUEFI

LongSoft / UEFITool

• https://github.com/LongSoft/UEFITool/releases/tag/0.28.0

Win-Raid Forum

• https://winraid.level1techs.com/t/asus-x99-aii-unlock-msr-0xe2-and-native-nvram/36830

Notice:

I recommend reading everything once before you start

MAKE THE BIOS BACKUP FIRST

• I would not recommend using afuwin to flash the uefi, my recommendation is clearly to use afuwin only for uefi backup.
• Flashing with the BIOS-FLASHBACK from the mainboard is easy and safe.
• Alternatively, you can flash the bioschip directly using a flasher, but this requires extra hardware and a second computer.

Tools:

• MMtool
• uefitool + uefipatch -> https://github.com/LongSoft/UEFITool/releases/tag/0.28.0
• bios file -> https://www.asus.com/us/supportonly/x99-a%20ii/helpdesk_bios/

ready to use efi Downloads:

• X99-A-II-ASUS-2101_CAP_STOCKROM_64-bit_BAR_ENABLED_rebar_driver_injected_barsize_Patched.zip
• X99-A-II-ASUS-2101_ROM_STOCKROM_64-bit_BAR_ENABLED_rebar_driver_injected_barsize_Patched.zip

If You want to diy

How To:

1

• Download Latest Bios From Asus website

• download MMtool, Uefi tool and uefipatch

• download patches.txt patches_txt.zip

• download rebardxe.ffs and pcibus.ffs

• X99-A-II-ASUS-2101_pciebusffs_rebardxeffs.zip

• put all files in same directory

MAKE THE BIOS BACKUP FIRST

2a

• Open Mmtool,
  • load Image -> ASUS_BIOS.CAP
  • Replace Tab
  • scroll down until you find "Pciebus" in Volume 02
  • click on pciebus
  • look for "Module file" further up the window
  • now choose the pcibus.ffs by clicking on BROWSE
  • click replace

OR skip step 2a

and add this to patch.txt

note:

last character in the line must be a space

#PciBus | Don't downgrade 64-bit BARs to 32-bit 3C1DE39F-D207-408A-AACC-731CFB7F1DD7 10 P:C70605000000833E067506C70604000000BE01000000:909090909090833E067506909090909090BE01000000

2b

• mmtool
• switch to Insert Tab
• look for "Module file" further up the window
• now choose the rebar.ffs by clicking on BROWSE
• directly below, enter "02" at Vol. index
• click insert

2c

• click "save Image"
• close mmtool

3

• download the atached patches.txt

OR

-create a new txt file in you folder

• paste #NVRAM whitelist unlock 54B070F3-9EB8-47CC-ADAF-39029C853CBB 10 P:0F84B300000041F6:90E9B300000041F6_
• replace the _ at the ende ( 1f6_) with a "Space "
• save file and close it.

4

• press Win+R on your Keyboard
• or start and search for cmd
• change directory to your folder
• then type: uefipatch BIOSFILENAME.CAP -o PATCHED_BIOS_FILENAME.CAP
• press enter

5

A:

• flash that cap file using the bios flashback feature

OR

B:

• open Efitool, load Patched .cap File
• Click -> Action -> Capsule -> Extract body -> save as .bin or .rom
• flash .bin/.rom to bios chip