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 ?
Thanks for any help! Edit: I restarted my machine and decided to go into bios for the first time, and by god it was so laggy, also stuck on AA Q-Code which could mean nothing or something. Specs: CPU: AMD Ryzen 9 3900X Motherboard: Asus ROG Crosshair VIII Hero More on forums.tomshardware.com
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March 30, 2023ROG CROSSHAIR VIII DARK HERO & Bios 5002 - Republic of Gamers Forum - 1105146
Hello, Since BIOS 5002 on my motherboard ROG CROSSHAIR VIII DARK HERO , I've been having instability issues with Windows. It crashes very often. CPU : AMD 5950x CM : Asus ROG CrossAir VIII Dark Hero / Bios 5002 RAM : G.Skill Flare X 32 Gb RAM GPU : Asus Prime RTX 5070 Ti Ext card : Asus Hyper ... More on rog-forum.asus.com
ASUS Dark Hero VIII - Modded Bios Flashing - BIOS Modding Requests - Win-Raid Forum
Hello, nice forum here. I’m on a ASUS Dark Hero VIII Anyway, I have been trying to flash a modded bios (.rom/.bin) using AFUWINx64 but EVERYTIME I flash I get this error. American MegaTrends Bios BTW forgot to mention! Flash Command: /p /b /k ← ( I get this error 18 - Error: Secure Flash ... More on winraid.level1techs.com
0
December 6, 2022Asus crosshair dark hero /5900x/ bios update quest... - Republic of Gamers Forum - 892312
Hi, I'm still on bios 3801 on my board but because of some issues I might need to flash a new version, I read that some people are having serious issues with the 4201 and I guess I'll avoid it. Which is the more recent and stable version then? Thanks More on rog-forum.asus.com
Videos
06:19
BIOS Update USB Flashback: Asus Crosshair VIII Hero (Semi - HowTo) ...
07:18
How to Update ASUS Motherboard BIOS with EZ Flash 3.0 (Step-by-Step ...
03:22
How to Update BIOS on ASUS ROG Crosshair X870E Hero – Step by ...
18:34
ASUS ROG Crosshair X870E Dark Hero Motherboard BIOS Overview - YouTube
02:51
How to Update UEFI BIOS: Asus VIII Hero Motherboard: Ver 0603 - ...
03:23
How to Update the BIOS on the ASUS ROG Crosshair X870E Apex ...
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 › us › 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 ·
Facebook
facebook.com › groups › captainsoftech › posts › 1104553714172232
Hi guys, So I was advised to update my bios for my rog
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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.
Asus
rog.asus.com › motherboards › motherboards filter › rog crosshair viii dark hero › support
bios & firmware - ROG Crosshair VIII Dark Hero
AMD Ryzen 3000 series ATX motherboard with Aura Sync, SupremeFX, ROG Audio, Dual M.2, Realtek LAN, Wifi , M.2 heatsink and USB 3.2 Gen 2
Overclock.net
overclock.net › home › forums › amd › amd motherboards
Asus Crosshair VIII DARK Hero.... Official Thread!? | Page 72 | Overclock.net
New BIOS 4805 Changelog: 1. Update AGESA version to ComboV2PI 1.2.0.Ca ROG CROSSHAIR VIII DARK HERO BIOS 4805
Dannyda
dannyda.com › home › how to update asus rog crosshair viii dark hero motherboard bios (how to update bios for asus rog series motherboard)
How to Update Asus ROG Crosshair VIII Dark Hero motherboard BIOS (How to update BIOS for Asus ROG series motherboard) < Blog-D without Nonsense
January 12, 2022 - 3.1 Boot into BIOS (Power off the PC wait for 5 seconds, power on the computer again and keep pressing F2 key on the keyboard)1.2 Navigate to Tool -> Asus EZ Flash 3 Utility ... 3.3 Click on via Storage Device(s), Find the firmware update file, then Click on OK button to start flash/update ...
H|ard|Forum
hardforum.com › [h]ard|ware › motherboards › amd mobos
ASUS ROG Crosshair VIII Hero newest BIOS (ver. 4004). How's it working for everyone using this mobo | [H]ard|Forum
February 24, 2022 - Hi all. So there has already been talk of ASUS releasing a BIOS for the Crosshair VIII Hero, Hero Wi-Fi and Dark Hero on the 4002 BIOS which uses the AGESA 1.2.0.6b version. Well, ASUS just made it a non-BETA BIOS at ver. 4004. Here's the notes on it: ROG CROSSHAIR VIII HERO BIOS 4004 "1...
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
Asus
rog-forum.asus.com › t5 › amd-500-400-series › rog-crosshair-viii-dark-hero-amp-bios-5002 › td-p › 1105146
ROG CROSSHAIR VIII DARK HERO & Bios 5002 - Republic of Gamers Forum - 1105146
July 1, 2025 - Hello, Since BIOS 5002 on my motherboard ROG CROSSHAIR VIII DARK HERO , I've been having instability issues with Windows. It crashes very often. CPU : AMD 5950x CM : Asus ROG CrossAir VIII Dark Hero / Bios 5002 RAM : G.Skill Flare X 32 Gb RAM ...
Win-Raid
winraid.level1techs.com › bios/uefi modding › bios modding requests
ASUS Dark Hero VIII - Modded Bios Flashing - BIOS Modding Requests - Win-Raid Forum
December 6, 2022 - Hello, nice forum here. I’m on a ASUS Dark Hero VIII Anyway, I have been trying to flash a modded bios (.rom/.bin) using AFUWINx64 but EVERYTIME I flash I get this error. American MegaTrends Bios BTW forgot to mention! Flash Command: /p /b /k ← ( I get this error 18 - Error: Secure Flash ...
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...
Asus
rog-forum.asus.com › t5 › amd-500-400-series › asus-crosshair-dark-hero-5900x-bios-update-question › td-p › 892312
Asus crosshair dark hero /5900x/ bios update quest... - Republic of Gamers Forum - 892312
March 7, 2024 - Hi, I'm still on bios 3801 on my board but because of some issues I might need to flash a new version, I read that some people are having - 892312
HWBOT Community
community.hwbot.org › home › overclocking & benchmarking › amd cpu overclocking › ryzen | bristol ridge am4 › rog crosshair viii hero / formula / impact / dark hero / extreme ln2 oc guide
ROG Crosshair VIII Hero / FORMULA / IMPACT / DARK HERO / EXTREME LN2 OC Guide - Ryzen | Bristol Ridge AM4 - HWBOT Community Forums
September 11, 2023 - ROG CROSSHAIR VIII Series 4001 BETA BIOS 1. Update AGESA version to ComboV2PI 1206 New AGESA version has been applied, but there may be bugs. So please rollback to the previous version if you have any problems Thanks ROG CROSSHAIR VIII HERO BETA BIOS 4001 ROG CROSSHAIR VIII HERO WIFI BETA BIOS 40...
Asus
rog-forum.asus.com › t5 › amd-500-400-series › bios-manual-for-crosshair-viii-dark-hero-motherboard › td-p › 894634
BIOS Manual for Crosshair VIII Dark Hero motherboa... - Republic of Gamers Forum - 894634
March 7, 2024 - - There is currently no BIOS manual for ASUS motherboards with Intel 6xx series chipsets. I think that this can be made available to everyone fairly quickly by ASUS support if this oversight is reported to them at the right place (you can also move your thread to this place via Threads Tools, just below your thread title) : ROG Care - Hardware & Software Support ... ASUS ROG Crosshair X870E Hero BTF BIOS Bug: CPU Temp Frozen at 11°C / Package 0°C (Ryzen 9950X3D) in AMD_800_Series Saturday