🌐
Asus
rog.asus.com › motherboards › motherboards filter › rog maximus z790 dark hero › support
ROG MAXIMUS Z790 DARK HERO | ROG Maximus | Gaming Motherboards|ROG - Republic of Gamers|ROG Global
It features five M.2 SSD slots with heatsinks, Intel® Wi-Fi 7, Thunderbolt™ 4, USB 20Gbps support, AI Overclocking, AI Cooling II, AI Networking, Two-Way AI Noise Cancelation and Aura Sync RGB lighting.
Discussions

Dark Hero - Advice Needed with BIOS Update
Not sure it will help your specific situation but will share it anyway. After having terrible experiences with AI suite, Armoury crate and basically all the ASUS software I pretty much avoided them on my current build (dark hero/5950x). I've updated the bios twice (3204 and now the latest one) through the utility in the bios menu on a usb. Haven't had any issues so far. Its sad that ASUS software always kinda works in the beginning but eventually stops working and your left with dead software laying around that requires too much effort to try get to work again. More on reddit.com
🌐 r/ASUS
9
2
April 2, 2021
Solved: Crosshair VIII Dark Hero Bios Help - Republic of Gamers Forum - 1112791
Tried to update to the latest bios Version 5101 from my old Version 3003 it said Successful then asked to restart which I did. After restarting my fans would run max speed & I had black screen but I waited 30 minutes to see if it'll resolve on it's own and get to the Windows menu but it never ... More on rog-forum.asus.com
🌐 rog-forum.asus.com
August 25, 2025
Installed latest Dark Hero BIOS on my Hero Z790 - Republic of Gamers Forum - 1051491
Hey everyone, I installed the Dark Hero 1602 BIOS on my regular Hero z790 by accident and it worked, however when I try to install the actual Hero latest BIOS 2703. I get a "not a valid BIOS file" error message. I downloaded the file again, put it on a FAT32 USB in the BIOS slot, tried in the ... More on rog-forum.asus.com
🌐 rog-forum.asus.com
November 1, 2024
ROG Dark Hero new build; noob needs help please
I haven't had a new BIOS in 17 years, and have never done a build before; I just plugged it in the for the first time today. How do I boot to my ODD? For that matter, how do I access the motherboard's Boot Menu? F8 on startup? At first that didn't do anything, and I don't see anything in... More on forums.tomshardware.com
🌐 forums.tomshardware.com
12
0
February 11, 2021
🌐
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 ·
🌐
Reddit
reddit.com › r/asus › dark hero - advice needed with bios update
r/ASUS on Reddit: Dark Hero - Advice Needed with BIOS Update
April 2, 2021 -

Hi Everyone,

Hoping someone can assist and advise why I am getting the following error.

I wanted to update my BIOS to the latest version, currently it is the same as when I received it (v.2503). EZ Update shows no available updates if I use AI Suite 3. I have downloaded the BIOS update from the website and tried to do a manual option, which tells me the BIOS image doesn't match my current motherboard. Considering the Dark Hero doesn't have a non wi-fi variant I am not aware of any other image available.

I don't want to attempt the old fashioned way via usb until I am sure it won't cause issues. Just wondered if anyone else has had this problem with the Dark Hero?

🌐
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 - For this method we need a USB flash drive/USB thumb drive that we can reformat (Means we will lost everything from that USB) 2.1 Download the correct BIOS update file. For Asus ROG Crosshair VIII Dark Hero, Click HERE
🌐
Vinafix
vinafix.com › pc technical support › bios
BIOS - ASUS ROG Crosshair VIII Dark Hero | Vinafix.com
August 30, 2021 - ASUS ROG Crosshair VIII Dark Hero AMD X570 ATX gaming motherboard with PCIe 4.0, 16 power stages, OptiMem III, on-board Wi-Fi 6 (802.11ax), 2.5 Gbps Ethernet, USB 3.2, SATA, M.2 and Aura Sync RGB lighting ROG CROSSHAIR VIII DARK HERO BIOS 3801 ...
🌐
Asus
rog-forum.asus.com › t5 › amd-500-400-series › crosshair-viii-dark-hero-bios-help › td-p › 1112791
Solved: Crosshair VIII Dark Hero Bios Help - Republic of Gamers Forum - 1112791
August 25, 2025 - Place only the renamed BIOS file C8DH.CAP in the root directory. 2. Locate the Flashback Port: Use the bottom-most USB port on the rear I/O labeled for BIOS Flashback (usually near the BIOS button). Plug in the USB stick there.
🌐
Asus
rog.asus.com › motherboards › motherboards filter › rog crosshair viii dark hero
ROG Crosshair VIII Dark Hero | Motherboards | ROG USA
At its default, the FlexKey functions as a system reset button, but it can also be easily set to quickly turn Aura lighting on or off, activate Safe Boot or enter the BIOS. ... Simple adapter that helps arrange front-panel cables in an orderly manner. ROG Crosshair VIII Dark Hero boasts an optimized power design layout and all the cooling headers you need to handle the prodigious power of the latest AMD Ryzen processors.
Find elsewhere
🌐
Manual Owl
manualowl.com › m › Asus › ROG-Crosshair-VIII-Dark-Hero › Manual › 642262
BIOS update utility, BIOS FlashBack | Asus ROG Crosshair VIII Dark Hero | Users Manual English (Page 58)
Home » Asus Manuals » Motherboards ... or operating system. Simply insert a USB storage device to the USB port (the USB port hole marked on the I/O shield) then press the BIOS FlashBack™ button for three seconds to automatically update the BIOS....
🌐
Asus
rog.asus.com › support › faq › 1038568
[Motherboard] How to use USB BIOS FlashBack™? | Official Support | ROG Global
April 9, 2026 - You do not need to enter the BIOS ... the BIOS. Use situation: If your Motherboard cannot be turned on or the power light is on but not displayed, you can use the USB BIOS FlashBack™ function....
🌐
Asus
rog-forum.asus.com › t5 › gaming-motherboards › installed-latest-dark-hero-bios-on-my-hero-z790 › td-p › 1051491
Installed latest Dark Hero BIOS on my Hero Z790 - Republic of Gamers Forum - 1051491
November 1, 2024 - Hey everyone, I installed the Dark Hero 1602 BIOS on my regular Hero z790 by accident and it worked, however when I try to install the actual Hero latest BIOS 2703. I get a "not a valid BIOS file" error message. I downloaded the file again, put it on a FAT32 USB in the BIOS slot, tried in the ...
🌐
FlashMyBoard
flashmyboard.com › mb › Asus_ROG_MAXIMUS_Z790_DARK_HERO
Asus ROG MAXIMUS Z790 DARK HERO BIOS - Analysis, Alerts & Downloads
December 15, 2025 - "1. Enhance overall system security.2. pdate the ME Firmware version to 16.1.38.2676.Updating this BIOS will simultaneously update the corresponding intel ME to version 16.1.38.2676. Please note after you update this BIOS, the ME version remains the updated one even if you roll back to an older BIOS later.Before running the USB BIOS Flashback tool, please rename the BIOS file (A5469.CAP) using BIOSRenamer."
🌐
Tom's Hardware Forum
forums.tomshardware.com › home › motherboards
Question - ROG Dark Hero new build; noob needs help please | Tom's Hardware Forum
February 11, 2021 - But only the USB stick will appear under Boot Priority once I click F8 in the BIOS. Once I plugged in the USB stick, F8 on startup gave me a Boot Menu (so maybe I cracked that mystery), but hitting Enter with the stick selected just takes me into the BIOS.
🌐
Asus
rog-forum.asus.com › t5 › amd-500-400-series › asus-dark-hero-viii-cant-update-bios-to-4902 › td-p › 1059295
Asus Dark Hero VIII - Cant Update Bios to 4902 - Republic of Gamers Forum - 1059295
November 29, 2024 - Asus Dark Hero VIII - Cant Update ... 06:20 AM · Hi There, I am trying to update my bios to 4902, I renamed the file, USB is formated to F32, when I put the stick in to the BIOS USB outlet and press on bios button for 3 seconds, ...
🌐
BleepingComputer
bleepingcomputer.com › bleepingcomputer forums › hardware › internal hardware
can't boot into asus dark hero bios - Internal Hardware
January 12, 2026 - The BIOS flashback button on the ... keyboard wasn't recognized at all at that time. Finally, I had to disconnect all USB devices except mouse and keyboard....
🌐
Asus
rog.asus.com › motherboards › motherboards filter › rog maximus z790 dark hero › support
ROG MAXIMUS Z790 DARK HERO
It features five M.2 SSD slots with heatsinks, Wi-Fi 7, Thunderbolt™ 4, USB 20Gbps support, AI Overclocking, AI Cooling II, AI Networking, Two-Way AI Noise Cancelation and Aura Sync RGB lighting.
🌐
Amazon
amazon.com › ASUS-Crosshair-VIII-Dark-Hero › dp › B08MTKJ6HM
Amazon.com: ASUS ROG Crosshair VIII Dark Hero AMD AM4 X570S Zen 3 Ryzen 5000 & 3rd Gen Ryzen ATX Gaming Motherboard (PCIe 4.0, 14+2 Ti Power Stages, PCH Heatsink, Wi-Fi 6, 2.5 Gbps LAN, USB 3.2 Gen 2 Type-C : Electronics
High-performance connectivity: ... USB 3.2 Gen 2 Type-C · DIY Friendly Design: Pre-mounted I/O shield, ASUS SafeSlot, BIOS flashback and premium components for maximum endurance. ... Asus ROG Strix B550-F Gaming WiFi II AMD AM4 (3rd Gen Ryzen) ATX Gaming Motherboard (PCIe 4.0,WiFi 6E, 2.5Gb LAN, BIOS Flashback, HDMI 2.1, Addressable Gen 2 RGB Header and Aura Sync) ... ASUS ROG Crosshair X870E Hero AMD X870E ...
🌐
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

🌐
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
🌐
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...