If you are not experiencing problems, the usual advice is to not update.
The reason is that a failed flash might brick your motherboard or at least send you down a recovery path that you are unprepared for.
Interrupting the process will cause a problem.
That is why it is advised to use a usb flash process and not the internet which can fail.
During a flash,nothing will appear to be happening. For perhaps 15 minutes.
Do not get antsy and stop the process to start over.
If you are having a problem and there is a bios update that looks like it might fix it, then by all means flash.
Ryzen is tightly tied to ram and ram compatibility issues are regularly updated.
When a new bios is in place, it will be the default bios so make any changes you need to.
On a new build, I will flash immediately to currency.
If anything fails, there is little impact. Answer from geofelt on forums.tomshardware.com
Asus
rog.asus.com › motherboards › motherboards filter › rog crosshair viii dark hero › support
ROG Crosshair VIII Dark Hero | Motherboards | ROG USA
Product Support for ROG Crosshair VIII Dark Hero Select Other Model · By registering your device, you can easily manage your product warranty, get technical support and keep track of your repair status. REGISTER YOUR PRODUCT · Disclaimer · Specifications and features vary by model, and all images are illustrative.
Asus
rog.asus.com › motherboards › motherboards filter › rog crosshair viii dark hero › support
ROG Crosshair VIII Dark Hero | ROG Crosshair | Gaming Motherboards｜ROG - Republic of Gamers｜ROG Global
Product Support for ROG Crosshair VIII Dark Hero Select Other Model · By registering your device, you can easily manage your product warranty, get technical support and keep track of your repair status. Upgrade Warranty: Here. * Please note that the availability of the Premium Care product lines might differ by country.
Should I update the BIOS on my Asus ROG Crosshair VIII Hero ?
I was wondering if there is any merit to updating the bios on this board.. I don't really have many performance issues, sometimes but hard to tell if its windows or some other program causing it. I'm pretty behind, my last update on anything with the motherboard was back in 2020. Along with... More on forums.tomshardware.com
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March 30, 2023BIOS Upgrade Asus ROG CROSSHAIR VIII DARK HERO from 3601 to 4201
you can safely go to latest bios version. IMO you should update bios to latest version. Latest version offers better system stability. It might help woth your freezing issue. More on reddit.com
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October 10, 2022Brauche Rat: Crosshair VIII Dark Hero - BIOS-Version 5101 vom 21. AUG 2025?
Hi u/TheOriginalNasty Ist da irgendwo eine Frage versteckt? Hast du Probleme beim Aktualisieren? More on reddit.com
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August 30, 2025X570 Dark Hero stable BIOS
What BIOS version are you on? There's plenty of stable versions, and a few that have minor issues. It really depends on what tradeoffs you're willing to accept. The newest bios 4805 appears to have a minor bug with the RGB on the board, and also has a small performance hit due a fix for a security vulnerability. All versions after 3801 permanently change the voltage / frequency table. Even a flash back to an older version cannot undo this. It seems to me that every version after 3801 has fixed one thing whilst introducing other issues, and performance is constantly decreasing. There was a version that restored some f this performance, but I'm afraid I cannot recall which it was. There's a very comprehensive and very long thread over at overclock.net specifically for owners of the Asus X570 Crosshair VIII Dark Hero, and there's always a lot of discussion after a new BIOS releases. Personally I'm staying on 3801 for now, but I'm on Windows 10 and do not need or use TPM. If you want to use TPM (like if you want to use Windows 11) then you'll want to use a version newer than 3801, as there is a bug in 3801 and earlier that causes stuttering with TPM enabled. Link to the thread I mentioned: https://www.overclock.net/threads/asus-rog-x570-crosshair-viii-overclocking-discussion-thread.1728796/ More on reddit.com
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April 16, 2024Videos
03:22
How to Update BIOS on ASUS ROG Crosshair X870E Hero – Step by ...
07:18
How to Update ASUS Motherboard BIOS with EZ Flash 3.0 (Step-by-Step ...
02:51
How to Update UEFI BIOS: Asus VIII Hero Motherboard: Ver 0603 - ...
06:19
BIOS Update USB Flashback: Asus Crosshair VIII Hero (Semi - HowTo) ...
03:23
How to Update the BIOS on the ASUS ROG Crosshair X870E Apex ...
18:34
ASUS ROG Crosshair X870E Dark Hero Motherboard BIOS Overview - YouTube
Reddit
reddit.com › r/asusrog › fyi crosshair viii dark hero bios update
r/ASUSROG on Reddit: FYI Crosshair VIII Dark Hero Bios Update
March 27, 2024 -
Just in case anyone was thinking of upgrading their am4 crosshair viii dark hero board to bios 4805 that released a few days ago, it breaks the ability to control the board LEDs such that ‘off’, ‘black’, ‘dark’, etc. is bright green. Breaks any aura designs you have that include the board. A few stock ones work but almost everything resolves to static bright green.
I downgraded back to 4702 and the issue was completely resolved. Just wanted to post it because I didn’t see anyone else who struggles with obsessive compulsive tendencies post about it on any of the boards I read.
I hope this helps someone
JustAnswer
justanswer.com › computer › qjiq0-i-m-trying-update-asus-rog-crosshair-viii-hero-wi-fi.html
I'm trying to update my Asus Rog Crosshair VIII Hero (WI-FI) motherboard bios but I can't figure out what I'm doing
November 9, 2024 - To update the BIOS on the Crosshair VIII Hero, download the correct BIOS version from Asus’s official site. Use the USB BIOS Flashback feature by placing the renamed BIOS file on a FAT32-formatted USB drive. Insert it into the designated USB ...
Asus
asus.com › supportonly › rog crosshair viii dark hero › helpdesk_bios
ROG Crosshair VIII Dark Hero - Support
"1. Update AGESA version to ComboV2PI 1.2.0.Ca Before running the USB BIOS Flashback tool, please rename the BIOS file (C8DH.CAP) using BIOSRenamer." Downloaded · DOWNLOAD · SHOW MORE DESCRIPTION · ROG CROSSHAIR VIII DARK HERO BIOS 4702 · Version 4702 · 20.83 MB · 2023/11/01 ·
Top answer 1 of 4
1
If you are not experiencing problems, the usual advice is to not update.
The reason is that a failed flash might brick your motherboard or at least send you down a recovery path that you are unprepared for.
Interrupting the process will cause a problem.
That is why it is advised to use a usb flash process and not the internet which can fail.
During a flash,nothing will appear to be happening. For perhaps 15 minutes.
Do not get antsy and stop the process to start over.
If you are having a problem and there is a bios update that looks like it might fix it, then by all means flash.
Ryzen is tightly tied to ram and ram compatibility issues are regularly updated.
When a new bios is in place, it will be the default bios so make any changes you need to.
On a new build, I will flash immediately to currency.
If anything fails, there is little impact.
2 of 4
1
Thanks for your replies! I've done the BIOS flashing before with a usb stick (still have it) through the BIOS.
With the laggy bios it ain't going to be very fun. Might be why when I first built this it was a frustrating experience for stability.
By laggy do you mean the mouse pointer?
I just use keyboard to navigate around...arrows up/down/left/right work perfectly and usually pretty speedy...with my Asus B550 board.
You might also reset CMOS before going into the in-BIOS update utility. It might help with everything in full defaults. And lastly simply try different USB ports.
Facebook
facebook.com › groups › captainsoftech › posts › 1104553714172232
Hi guys, So I was advised to update my bios for my rog
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Linus Tech Tips
linustechtips.com › computer hardware › cpus, motherboards, and memory
how to flash BIOS on Asus Crosshair Hero VIII? - CPUs, Motherboards, and Memory - Linus Tech Tips
March 11, 2021 - My dear friends, in case I want to flash BIOS I need to ask you few things before doing this? I understand procedure but: 1.Do I plug in usb flash drive in any of the USB ports or particulary USB port marked as BIOS? 2.Does USB flash drive need to be formatted in FAT32 or NTFS? 3.Do I need to ren...
Reddit
reddit.com › r/asus › bios upgrade asus rog crosshair viii dark hero from 3601 to 4201
r/ASUS on Reddit: BIOS Upgrade Asus ROG CROSSHAIR VIII DARK HERO from 3601 to 4201
October 10, 2022 -
Hi all asus master people, i was asking myself if it is worth it upgrade from bios version 3601 to 4201, and if it is worth should i go by step or can i safely upgrade directly to the latest with no issue? I'm not having particolar problem at the moment with the 3601 just some freeze sometime that i don't even know if they come from the mobo firmware at all.
Thanks to all people that will help me.
Reddit
reddit.com › r/asusrog › brauche rat: crosshair viii dark hero - bios-version 5101 vom 21. aug 2025?
r/ASUSROG on Reddit: Brauche Rat: Crosshair VIII Dark Hero - BIOS-Version 5101 vom 21. AUG 2025?
August 30, 2025 -
Ich bin immer noch auf der Stock 3702 BIOS-Version. Ich will auf eine stabile Version updaten, die einige der Sicherheitslücken behebt und auch Stabilitätsverbesserungen für meinen PC bringt.
Frage: Gibt's irgendwelche Stabilitätsprobleme mit der 5101 Version? Installationsprobleme? Muss ich nach einem Update irgendwelche Einstellungen ändern? Ich hab mich am Anfang einfach an den Auto-Einstellungen orientiert, als ich das Mobo eingerichtet hab.
CPU - AMD Ryzen 5900X
RAM - 32GB(2X16), DDR4 3600, 16-19-19-39, C16
YouTube
youtube.com › watch
How to Update BIOS on Asus ROG Maximus Z790 Hero - YouTube
In this step-by-step guide, you'll learn how to update the BIOS on your Asus ROG Maximus Z790 Hero motherboard. We cover everything from downloading the late...
Published June 14, 2024
Station-Drivers
station-drivers.com › accueil › bios › asus › amd x570 (am4)
Station-Drivers — Asus ROG Crosshair VIII Dark Hero
February 2, 2026 - Asus ROG RAMPAGE VI EXTREME Bios & Drivers
YouTube
m.youtube.com › watch
ASUS ROG Crosshair VIII Hero BIOS Overview
October 30, 2019 - Share your videos with friends, family, and the world
YouTube
youtube.com › watch
How to Update Motherboard BIOS Without a CPU Using ASUS Bios Flashback (Crosshair VIII Impact) - YouTube
A very basic but important procedure on most motherboards of today. Especially on AMD platforms the motherboards are usually supported for a very long time e...
Published March 7, 2021
PC Builder
pcbuilder.net › pc builder › product › motherboard
Choose a Motherboard - PC Builder
Building a PC for yourself and wanted to check the compatibility of the motherboard? Here at PC Builder, you can choose from hundreds of available motherboards for checking the compatibility and building the right PC for yourself. You just have to choose the motherboard from the list of available ...
Reddit
reddit.com › r/asus › x570 dark hero stable bios
r/ASUS on Reddit: X570 Dark Hero stable BIOS
April 16, 2024 -
Hi all,
I need advice if the newest bios version for my board is stable. I m still running the BIOS that was updated after the initial botched launch for the board.
Im running a 5900x and a 4090, 2 sticks of 16 GB 3600mt cl 14 trident z neos, and I feel the BIOS is causing me some stuttering.
Asus
rog.asus.com › mainboards › mainboards filter › rog crosshair viii dark hero
Gaming Mainboard ROG Crosshair VIII Dark Hero | ASUS
Motherboard ASUS X570 ROG CROSSHAIR VIII DARK HERO - SIAP UNTUK GAMING, OVERCLOCK & PRODUKTIVITAS! ... ROG X AMD LAGI BAGI-BAGI EXCLUSIVE MERCHANDISE 10 Pcs Bomber Jacket dan E-Money Edisi ROG with AMD Untuk 10 Orang Beruntung ... Update BIOS tanpa colok CPU, RAM, dll.
PC Case Gear
pccasegear.com › asus rog crosshair viii dark hero motherboard
Buy the ASUS ROG Crosshair VIII Dark Hero | PCCG
ASUS ROG Crosshair VIII Dark Hero Motherboard
Buy the ASUS ROG Crosshair VIII Dark Hero X570 [ROG-CROSSHAIR-VIII-DARK-HERO] Motherboard from PC Case Gear – Australia’s Premier Online PC Store.
Price A$649.00
Amazon
amazon.de › - › en › Crosshair-Gaming-Motherboard-Socket-Ryzen › dp › B08NCJQY32
ASUS ROG Crosshair VIII Dark Hero Gaming Motherboard Socket Ryzen AM4: Amazon.de: Computer & Accessories
Entdecken, shoppen und einkaufen bei Amazon.de: Günstige Preise für Elektronik & Foto, Filme, Musik, Bücher, Games, Spielzeug, Sportartikel, Drogerie & mehr
Top answer 1 of 3
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Try to rule out the CPU/IMC by lowering the DDR Frequency and Infinity fabric clock to 3400/1700 respectively. I have this issue at IF clocks of 3800 or higher because my 5900x has a crappy IMC. I've never heard of one not being able to do 3600, however.
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Thanks to @butt_yodel for pointing me in the right direction!
Setting FCLK Frequency to 1700MHz allowed me to run the memories at DDR4-3466MHz.
On Reddit I saw the comment Fclk = half memory speed.
https://www.reddit.com/r/Amd/comments/jxaj4m/what_is_the_default_fclk_for_a_5950x/
Since I tried to run DDR4-3600MHz I had to set FCLK Frequency to 1800MHz.
After doing this the computer booted fine!
