Hi there
Thanks for the update, no isuees with this new bios, the fact seems a bit more stable than original Asus 1903, I had some issues with my I7 3770K oc to 4.6 after Mircosot security patch for Melttdown and my OC become unestable, with RPCS3 emulator and I had some Whea log error but with this bios these errors are gone.
Cheers.
Yep, amazing when well written and mature code clears up a whole lot errors and annoyances.
Keep smiling! 
security verification failed
Please tell me how to fix it.
@singkanongna - mod BIOS must be flashed using USB Flashback, post #1 tells you what page of your manual to see if you are not sure how that works
Thanks for the modified bios. I was able to flash the bios with the modified version using the USB ROG connect method per instructions.
I’m currently running into an issue when trying to install Windows 10. At the install screen, it could not be installed on the NVME drive.
The message says, “Windows cannot be installed to this disk. This computer’s hardware may not support booting to this disk. Ensure that the disk’s controller is enabled in the computer’s BIOS menu.”
I have tried to disable the CSM, but after restarting it does not post. I had to use clear CMOS button to post. Please let me know if I’m missing some step.
My PCIE adapter/SSD: Asus Hyper M.2 X16 card V2, Silicon Power A80 2TB Gen 3
@Abyssal_Kings
What kind of graphics card are you using? All your core drivers need to be .efi driver enabled to boot into the UEFI environment.
Furthermore, any MBR type drives need to be converted to GPT (GUI Partition Table); as MBR formatted drives don’t play nice in the UEFI environment. Also unhook all your other current drives except the NVMe to do the first install. You can rehook up your other GPT drives later.
Additionally, ensure that your version of Windows ISO is the correct one.
NOTE From the FAQs on to burn ISOs via Rufus software:
“If you are using a Windows ISO that can be dual booted in UEFI or BIOS mode, you may find that the USB created by Rufus does not preserve the dual UEFI+BIOS boot feature.
Especially, the Windows 8 or later installation ISOs, that support both UEFI and BIOS boot, will be converted to either one or the other mode, depending on the option you selected under Partition scheme and Target type: If you select MBR and BIOS or UEFI-CSM, the USB will be bootable in BIOS-mode only (even on UEFI systems), and if you select GPT then the USB will be bootable in UEFI mode only (and not bootable on a BIOS system at all).
This is done to avoid confusion, as it can be difficult for non-expert users to know whether they actually booted in UEFI or BIOS mode when a USB Flash Drive can be booted in both modes, and installation is meant to be a one-off operation, targeting a very specific machine and boot mode. You probably don’t want to go through a full Windows installation, only to realize that it was installed in BIOS mode when all you really wanted was UEFI mode.
By ensuring that only one or the other can be used for Windows installation, there is no room for error with regards to which mode was used.”
I would just like to thank the OP for this mod.
I am using it successfully for some months now with windows 10 UEFI mode.
Only problem I have found is when you set up power button to go to sleep and not shutdown, it works but if you wake from sleep from power button and not mouse keyboard then power buttons stops working.
You have to use the sleep from start menu after that to make power button work for sleep again.
If I wake the system from mouse or keyboard problem does not appear.
I did try to install different versions of intel me drivers (from 11.x that windows installs down to 8.1x) but it does not solve this.
Anyway it’s just a minor problem and someone that uses power button for power off will never see it.
Again thank you for the mod. Hope to see newer ones.
Anyway the link can be reloaded? I’m getting a weird broken rar "f44t5225p87628n12_ucCoLdGS.rar"
I’m super excited to try this out!
@singkanongna
See post #5 of this thread…you have to use the FLASHBACK PROCEDURE found in your manual.
@OGWONDERBOY716
No problem here, try updating your "winrar" software to the latest version…v5.91
Cheers
Hi @hancor pls help,
I have succeeded flash bios my flash bios was successful, but I encountered a problem with installing windows
[[File:WhatsApp Image 2021-01-25 at 2.02.32 AM(1).jpeg|none|auto]]
settings in my bios
the NVME I use
thanks 
@metronoems
In your BIOS/UEFI make sure to set CSM (Compatibility Support Module) = DISABLED.
You should be able to see the drive then.
Also unhook all other drives when doing the first install.
Okay rechecked the file and re-did the NVMe module using MMTool 4.5.0.023
Uploaded BIOS/UEFI to first post Latest edit to Jan 24, 2021. Download and give that a whirl…
Further to this, check for the correct NVMe driver suitable for your NVMe SSD brand. ie check manufacturers website…
I just did an upgrade to my "ancient" Z87-Deluxe mobo and used the Samsung 970 EVO Plus 2TB drive without a hitch. Read ~3300MB/s and write ~2800MB/s.
Cheers
Hans
@hancor
I have re-flashing the bios with the latest file that you shared.
and CSM (Compatibility Support Module) has been set as disabled.
[[File:WhatsApp Image 2021-01-25 at 10.01.16 AM(1).jpeg|none|auto]]
the result is still the same, with the previous problem 
please help, for this
Cheers
First of all…u picked a NOT too good adapter…by the way…is the XPG a PCIe NVMe or a SATA M.2 drive?
Is that a PCIe adapter with shared ACHI SATA slot and a PCIe one? Does it uses the PCIe bus or SATA bus from that port? Or only that port for the SATA slot?
Sorry for the questions…but it has to be made, this mod in this board is very easy and very reliable…my point is, is there another issue here…
@metronoems
EDIT: Ok seems that after all its a fair dual-solution adaptor and indeed a XPG NVMe disk. As Hancor told u before, disconnect all drives, plug the nvme, ignore disk in bios and install OS USB GPT RUFUS Win10 iso.
CSM to disable and secure boot to Other OS, ignore disk presence in bios, if it fails lets try PCIe x16 Slot 1 and/or PCIe x16 Slot 3, just to check behavior.
@MeatWar
The pci card adapter that I use is the ORICO PDM2 brand.
NVME used is adata xpg 8200 pro 1tb
please find a solution
@metronoems
Your PCIe adapter uses the B type key for SATA, and M type key for the NVMe type drives.
Ensure your drive is in the correct M type key slot; otherwise no joy. Power up and see if the adapter LED lights up…if not change slots on the adapter to the bottom red PCIE slot as mentioned below.
Manufacturers spec sheet says your adapter is validated for Samsung drives, etc.
I don’t know if the XPG is on that list, but not mentioned on the page I visited.
From your mobo site:
https://dlcdnets.asus.com/pub/ASUS/mb/LG…eatures_ROG.pdf
Fast Boot = Disabled
Also
Boot from PCIe/PCI Expansion Devices [Legacy OpROM first] (default) should be set = [UEFI driver first]
Lastly move your adapter to the third red PCIe slot from the CPU ie PCIE_X4/X1_3 slot as per your manual.
EDIT: as Meatwar mentioned you need the UEFI/GPT version of Windows 10 for this to work ie install OS USB GPT RUFUS Win10 iso
Good luck!
@metronoems
Delighted that worked out for you. Sometimes you just need to follow the DESTRUCTIONS carefully!
Just signed up to thank hancor and others for the effort to make this modded firmware available.
In my case, I put the nvme adapter (cheap 6 USD from Amazon) in PCI-E slot number 2 as it is faster than PCI-E slot 3. I did set slot 2 manually to gen-3.
I also did not need to disable CSM, once Windows was installed in UEFI mode, it was detected straight away in the uefi and could be used as an efi boot drive.
I’m actually pretty happy with the result, got 2186MB/s read and 858MB/s write on my Timetec 960GB nvme drive (74 USD Amazon).
For a nearly eight years old system it’s an awesome upgrade that doesn’t break the bank.
Cheers all, keep up the good work.
Hi there
Just a few questions:
When I plug my pci express adapter into 3rd red PCi express 2.0 4x/1x I just get around 420mb/s because always use 2.0 1x, however if I use the second 8x/8x I get around 2800mb/s read but my GPU runs at 8x and I lost some performance in game.
I saw there is another PCI express 2.0 4X (black) above the first PCI express x16 however my Noctua D14 cover that PCI, any idea about what speed can get in this PCI? any fix?
Regards & Thanks.