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
asus.com › supportonly › rog crosshair viii hero › helpdesk_bios
ROG Crosshair VIII Hero - Support
"1. Update AGESA version to ComboV2PI 1.2.0.Ca Before running the USB BIOS Flashback tool, please rename the BIOS file (C8H.CAP) using BIOSRenamer." Downloaded · DOWNLOAD · SHOW MORE DESCRIPTION · ROG CROSSHAIR VIII HERO BIOS 4702 · Version 4702 · 20.83 MB · 2023/11/01 ·
Asus
rog.asus.com › motherboards › motherboards filter › rog crosshair viii hero › support
ROG Crosshair VIII Hero | Motherboards | ROG United States
Product Support for ROG Crosshair VIII 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.
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
7
0
March 30, 2023Hero VIII Bios Update problem - ROG Forum - ASUS
I am trying to update my BIOS as I am having trouble with some devices and was told to update. Once I had updated to the most recent at the time (2202) I only got a black screen. I downloaded an older version and the PC started. I am looking into trying to update once more and was wondering ... More on rog-forum.asus.com
Can't enter or update BIOS on Asus ROG Crosshair VIII Hero with AMD Ryzen 5950X
Okay, this was me being stupid. I downloaded the BIOS for the non WIFI model. With the correct BIOS named the correct way in the USB file it is now updating. More on reddit.com
16
4
December 3, 2020asus released new bios (ROG Crosshair VIII Hero WI-FI) beta version 1.1.9.0
I flashed to this release on the non-WiFi version of the board.
Oddly enough, having the 'core performance boost' setting enabled actually seemed to limit PBO performance somewhat (similar to having PBO disabled.) This is different to 3003 where for me I had to have it enabled. I had to set it back to Auto to get decent results.
I wanted to load it purely to see if it affected the temps of the 5950x, as I have been running hot at idle over the past couple of weeks. Ironically this was due to the epic games launcher, so I've nothing to benchmark for any improvements at the moment.
All appears stable though.
More on reddit.com 4
1
December 28, 2020Videos
05:43
How to Update Motherboard BIOS Without a CPU Using ASUS Bios ...
23:57
Flashing BIOS and Installing Windows 10 - Asus ROG Crosshair VIII ...
06:19
BIOS Update USB Flashback: Asus Crosshair VIII Hero (Semi - HowTo) ...
02:51
How to Update UEFI BIOS: Asus VIII Hero Motherboard: Ver 0603 - ...
04:51
How To Update The BIOS On The Asus Crosshair VII Hero - YouTube
06:45
How to update the BIOS on Asus X570 Motherboard - YouTube
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 ...
Oreate AI
oreateai.com › blog › how-to-update-bios-asus-rog-crosshair-viii-hero-wifi › bbef50eceb3108ccfe17e0cbe7b36cc0
How to Update Bios Asus Rog Crosshair Viii Hero Wifi - Oreate AI Blog
January 7, 2026 - Restart your computer and repeatedly press Delete or F2 during boot-up until you see the UEFI interface appear on screen. This part feels like stepping into another world—a realm where settings dictate how well our machines perform!
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...
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 hero (wi-fi) › helpdesk_bios
ROG Crosshair VIII Hero (WI-FI) - Support
"1. Update AGESA version to ComboV2PI 1.2.0.Ca Before running the USB BIOS Flashback tool, please rename the BIOS file (C8HW.CAP) using BIOSRenamer." Downloaded · DOWNLOAD · SHOW MORE DESCRIPTION · ROG CROSSHAIR VIII HERO(WI-FI) BIOS 4702 · Version 4702 ·
Cybertechnosys
cybertechnosys.com › home › guide
Maximize Your Asus ROG Crosshair VIII Hero's Performance: Essential Guide on How to Update BIOS - Cybertechnosys
November 13, 2024 - 2. Check for Power Outage: Ensure you have a stable power supply and avoid any power outages during the update process. 3. Download the Latest BIOS: Visit the ASUS website and download the latest BIOS version specifically for your ROG Crosshair VIII Hero motherboard.
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
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 ·
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
asus.com › supportonly › rog crosshair vii hero › helpdesk_bios
ROG CROSSHAIR VII HERO - Support
"1.Updated AGESA to ComboV2 PI 1.2.0.F. 2.Enhanced system performance, stability, device compatibility, and security. Before running the USB BIOS Flashback tool, please rename the BIOS file (C7H.CAP) using BIOSRenamer."
Asus
rog.asus.com › motherboards › motherboards filter › rog crosshair vii hero › support
ROG CROSSHAIR VII HERO | Motherboards | ROG Global
Product Support for ROG CROSSHAIR VII 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.
Manual Owl
manualowl.com › m › Asus › ROG-Crosshair-VIII-Hero › Manual › 560378
BIOS update utility, USB BIOS Flashback | Asus ROG Crosshair VIII Hero | Users Manual English (Page 60)
Home » Asus Manuals » Motherboards ... BIOS without entering the existing BIOS or operating system. Simply insert a USB storage device to the USB port, press the USB BIOS Flashback button for three seconds, and the BIOS is updated automatically....
Asus
rog.asus.com › motherboards › motherboards filter › rog crosshair viii hero (wi-fi) › support
ROG Crosshair VIII Hero (WI-FI) | Motherboards | ROG United States
Product Support for ROG Crosshair VIII Hero (WI-FI) 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.
ManualsLib
manualslib.com › brands › asus manuals › motherboard › rog crosshair vii hero
Updating Bios; Ez Update - Asus rog crosshair vii hero Manual [Page 89] | ManualsLib
January 3, 2019 - instructions in this chapter to update your BIOS when necessary. Visit http://www.asus.com to download the latest BIOS file for this motherboard.
Asus
asus.com › supportonly › crosshair vi hero › helpdesk_bios
ROG CROSSHAIR VI HERO - Support
"1. Update AGESA version to ComboV2PI 1208 2. Mitigate the AMD potential security vulnerabilities for AMD Athlon™ processors and Ryzen™ processors Before running the USB BIOS Flashback tool, please rename the BIOS file (C6H.CAP) using BIOSRenamer."
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 - 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. Update AMD AM4 AGESA V2 PI 1.2.0.6b 2. Improve system performance and stability I'm running a Crosshair VIII Hero non Wi-Fi and have this BIOS downloaded.
Asus
rog-forum.asus.com › t5 › promotions-general-discussions › hero-viii-bios-update-problem › td-p › 645352
Hero VIII Bios Update problem - ROG Forum - ASUS
March 6, 2024 - 1) Format an empty usb flash drive to FAT.32 2) Download the bios file from the asus support center 3) Extract the bios file to the usb flash drive 4) Rename the bios file to M8H.CAP 5) Insert the flashdrive into the ROG Connect port 6) Press ...
Reddit
reddit.com › r/asus › can't enter or update bios on asus rog crosshair viii hero with amd ryzen 5950x
r/ASUS on Reddit: Can't enter or update BIOS on Asus ROG Crosshair VIII Hero with AMD Ryzen 5950X
December 3, 2020 -
I just built a new computer with Asus ROG Crosshair VIII Hero (wifi) and a Ryzen 5950X, but the computer stops booting after showing the Press F2 or Del flash screen. It will not enter BIOS. I have tried multiple keyboards on multiple USB ports.
I figured it might be the BIOS version having a conflict with my CPU, so I tried using the USB BIOS Flashback utility where you plug a USB stick into a specific USB port marked BIOS and press the BIOS flash button on the back of the motherboard until it starts blinking.
The result is that the button blinks a few times, then goes solid blue and nothing happens. The activity light on the USB stick also blinks once.
I have the correct filename (C8H.CAP), using the 2702 version of the BIOS, as indicated here, nothing else on the USB stick, formatted to FAT32, file in root, no other partitions, I have tried with a USB2 and USB3 stick.
I also have a post Q code 02 which means "AP initialization before microcode loading". I have seen that might indicate a power issue, but I can't figure out what that could be. My GPU, CPU and 24 pin are all connected as they should be and the PSU has worked fine in my old computer.
Am I missing something obvious here?