Hello guys. Sorry for the failed English. I have an ASUS Crosshair V Formula Z and I am trying to install Windows 10. I found this thread and am trying to install the modified BIOS that was made available. But it looks like the message saying it didn’t pass security check. Does anyone know how to solve?
Hello! I have the same problem, and I don’t know where to move on. Need some assistance. Please help!
Hello Guys 
. I am new here. I need urgent help to enable GEN2 and enable "above 4g decoding " in my Asus Crosshair V Formula-Z. your help would be appreciated becausde i have in this for days and i could not find resources and I am not an expert in BIOAS settings.
Thank you inn advance
I am willing to make a donation if you could help me with my problem.
I am new here. I need urgent help to enable GEN2 and enable "above 4g decoding " in my Asus Crosshair V Formula-Z. your help would be appreciated, I have in this for days and I could not find resources and I am not an expert in BIOAS settings.
Thank you in advance
@Konstantin
Is the disk you want to install Windows into working with the ASMedia controller? If yes, then that would explain why it doesn’t want to install. The ASMedia controller driver is not included by default in the Windows install. Only the one for the AMD controller in included. So either the disk must be working with the AMD controller during installation or the ASMedia driver must be manually added to the Windows install with a program like NTLite. It is worth a look to see if this is your problem.
@wkholi
Unfortunately, this is beyond my current abilities. But maybe someone else here with more in depth knowledge of this can help you.
I Just want to enable GEN2 and above 4G on the ASUS BIOS, I have searched all over the internet and could not find it, although I know that the board has GEN2 ability. I think enabling GEN2 has nothing to do with the OS. Right?
@wkholi
Well… Yes and no. No, it is not related directly to the OS in the sense that Windows by itself have no settings to control this but yes in the sense that, if it is enabled in the Bios, it must also be enable in the video card driver to be active.
From what i understand, it was originally only required by mutli-GPU setup to enable memory mapping beyond the 4G point, usually for more than 4 GPU setup in server configuration (usually used for mining). The only change since then seems to be that because the latest video cards have around 16G of memory, video card manufacturers found a way to leverage this setting to enable up to 11% increase in some games performance.
Most motherboard that have this setting is set to off by default to increase video card compatibility.
I am not 100% sure about what i will say next: I think a system (the OS, not the video card) with more than 8G of memory, or at worst, with equal or more memory in the system than the video card have, should have more chance to not need this setting because the video card memory mapping is probably loaded and kept in the system memory. But i can be completely wrong about this.
My last comment will be this: After researching this, it seems not many people seems to know in depth what they are talking about when they write about this. One exception is the guy named noden in the last post in this page, which refer to this page. Keep in mind this was in 2014 so drivers and video cards have improved since then but the functional mapping logic is still the same and valid. I must admit it is very technical and not easy to read for everyone but it may help to undersant a little how it works.
Thank you, I will take a look at it.
This page seems very technical as you said 
I sent an email to Asus.
Hello! I have the same problem, and I don’t know where to move on. Need some assistance. Please help!
Try disabling Secure Boot. Look in Boot Options/CSM (change to Other OS).
I am hoping this platform doesn’t completely die off anytime soon. We hopefully will continue with whatever updates may still be available. Few can afford any upgrades to a newer system.
Hi dear friends,
I m a mech eng.( retired )
my english is not enough . Sorry
First step.
1. Make usb drive bootable ( mod bios 2201 v15) with rufus .automatic selection fat 32 .
2.Pc closed but enegy open.
3.Plug the memory into the usb port ( White) of the motherboard next to the rog button .
4.press the rog connect button for 3-5 seconds and release your hand
5.The light will turn off after 2 minutes
6.2201 mod means bios written.
7.Mount m2 nwme ssd pcie x4 adapter
8.mount the adapter in slot 3 of the motherboard from above (red empty slot )
9.Insert the win 10 x64 installed usb drive to the computer and start the computer
10. Bios menü :
secure boot (windovs Uefi )
CSM closed
Onchip Sata Channel closed
Fast boot enabled ( possible)
(You will see pata (m2 nwme ssd) etc. in the boot menu title.)
save settings with F10. After reboot.
Enter the boot menu with the F8 key on the post screen.
Select your uefi memory and start installation
I never tried to do it with CSM open it made me so tired.
Now my machine is wery good. ( same rocket ) ( Read : 1650 write: 1450 Pcie 2.0
computer startup : 4-5 second
Thank you very much to the forum moderators ( Phoenix48 , Fernando, Stickmode)
My system : Crosshair V Formula Z , Amd Fx 9370 cpu , Asus R9 270x dc2t Gpu, Samsung 970 evo plus 250 gb. …
Bios updated to v16
Changelog:
[Updated] - OROM LAN Intel Boot Agent GE v1.5.88 -----> v1.5.89
>ASUS-Crosshair-V-Formula-Z-2201 MOD v16 (2021-03-19)<
Hi all,
Signed up to say massive thanks to all involved.
My level of computing is minimal but managed to update my bios to V16, I think. My M.2 cards are working etc so I assume it worked.
Question: with all the updates to controller’s do I need to update drivers ? Or does Windows 10 include the necessary drivers ?
I haven’t done a clean install after updating the bios etc.
@Moorsy_AU
Windows usually include the required drivers but, sometimes, they are not the best for the controller. I suggest you look at this thread to see if you have the best or latest drivers.
If you have a Samsung NVME install the Samsung drive available here > https://www.samsung.com/semiconductor/mi…download/tools/ if this applies to your build.
@Phoenix48
Hi Phoenix, thanks so much for your dedicated work. I love the Bios and have been using it for a while. Is there any chance for the modded bios to be flashable by EZ Flash? Somehow my Flashback function on my board failed despite changing the Bios chip. Thanks in advance!
@Drunk_Arthas
This may be a long answer because there is no obvious simple solution that is sure to work.
First, 2 facts for anyone reading this:
1- Good old normal Bios like the Formula (non-Z) used a .ROM file that were not protected. If a MOD was done, you mainly restored the checksum and you were good to go.
2- The Formula-Z use a .CAP file. This means a normal .ROM encapsulated in a .CAP file. This is why it is called a .CAP. So restoring the checksum in the main file is not sufficient. The capsule provides a way for the flasher (like EZFlash) to verify if a Bios was tempered with. And obviously introduce problems when a legitimate MOD is done with it because it detect a change and EZFlash refuse to flash it.
So how to go around the problem? The obvious way is to use the ASUS Flashback fonction. But that is a problem in your case. Here are possible work arounds:
- The most obvious solution is to try to remove the capsule entirely and try to flash it again with EZFlash as a .rom file. You can try to do that with UEFITool v0.28. I think you can find some good guides here in this forum. The problem with this solution is that EZFlash may or may not look for a .CAP file and maybe not accept a .ROM file. So i would try the next solution first that is more indirect but much simpler.
- I don’t know where reside the ASUS Flashback function itself. If it is flashed within the Bios itself then you can try this: Flash the latest ORIGINAL Bios from ASUS. This will be accepted by EZFlash and may restore (or not) the ASUS Flashback function. From there, if the Flashback is restored, you will be able to flash the latest MOD v16 and your problem will be definitely gone.
- If the Flashback function is not restored, this means that it is not within the flashable portion of the Bios. So, is that case, it may be within the container of the Bios on the Bios chip. If it is the case, the only ways is to either 1- Buy a flasher (programmer) to reflash and reprogram the chip directly or 2- Buy another preprogrammed chip that don’t have that problem.
- The third possibility would be that the ASUS flashback is not even on the BIOS chip but on another chip somewhere else related to the USB port in the back. I don’t have any suggestion in that case other than change the motherboard but i don’t think it is the case that apply here, simply because, if it would have been the case, you would have had this problem before even changing the Bios chip because it would have been completely independent from it. So i don’t believe in this one.
@Phoenix48
Thanks so much for your help! Turn out I found a replacement for my MB, with working V16 mod happily installed via Flashback. Enjoying the speed of M2 NVMe again