Great, good to know. My question is, can I take out the USB Drive that is plugged in right now that I tried these steps on? The solid green light is on, and I'm wondering if I can just pull it out without causing any damage to the motherboard.
Pretty sure a solid light means the procedure didn't start. The light should be OFF when it's done.
You can shutdown the system. It's fine. The BIOS flashback didn't work or should I say didn't start. Answer from Nemesia on forums.tomshardware.com
ASUS
asus.com › support › faq › 1038568
[Motherboard] How to use USB BIOS FlashBack™? | Official Support | ASUS Global
April 9, 2026 - [Motherboard/Desktop PC/Gaming DT] ASUS EZ Flash Introduction ... Note: The easiest way to update the BIOS is provided. You do not need to enter the BIOS screen of the motherboard or use the EZFlash software in the operating system to use the hardware functions of the motherboard to update 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.
Hardware Canucks
hardwarecanucks.com › home › forums › cpu's and motherboards
How to use ASUS bios Flashback the right way. | Hardware Canucks
June 9, 2024 - Well I went and got the bios file loaded it onto the usb stick and tried to recover the bios but after many attempt's I decided to go on the net and googling why ASUS Bios Flashbaack wasn't working and thankfully a youtube video was up and it showed the guy using the Bios Flashback feature and also mentioned something I have never heard any youtuber mention until that time and it was that the usb stick must also be converted to MBR GPT will not work.
The flashback button does not seem to work - Republic of Gamers Forum - 619450
What I have done is: 1. Download ... official asus page. 2. Unzip the file 3. Rename the file to M8H.CAP 4. Formatting a flash drive in FAT32 (ALSO I TESTED WITH NTFS) 5. Copy the M8H.CAP file to the pendrive 6. Turn off the computer, leaving the power supply ON 7. Insert the Pendrive into the flashback port ... More on rog-forum.asus.com
What does bios flashback button on Asus strix B550-f do?
saves you from a bad bios update/flash, also lets you update bios without a cpu installed More on reddit.com
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August 2, 2020What exactly is Bios Flashback
Normally to be able to update the BIOS of a motherboard, you need the system to be operating normally. You can then update the BIOS either from the BIOS itself or (less recommended or done these days) from Windows. Of course, this requires a processor compatible with the motherboard. BIOS Flashback offers a different way to update the BIOS, where you don’t require any component AT ALL, apart from the motherboard and the power supply ; and the BIOS files on a USB drive. This lets up update the BIOS in case it’s needed to add support for the CPU you just bought alongside the MB, which is sometimes required before it can work AT ALL with it. More on reddit.com
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November 19, 2024Solved: ASUS Z790-H Bios flashback LED blinking, and pc no... - Republic of Gamers Forum - 1063107
Got a problem, looking for solution my setup: ASUS ROG STRIX Z790-h GAMING WIFI DDR5 CPU : INTEL 13700K RAM : DOMINATOR® TITANIUM RGB 64GB (2x32GB) DDR5 DRAM 6600MT/s CL32 Intel XMP Memory Kit GPU : GeForce RTX™ 4060 Ti GAMING OC 8G PSU : ROG STRIX 1000W GOLD AURA EDITON So the problem is: ... More on rog-forum.asus.com
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Top answer 1 of 4
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Great, good to know. My question is, can I take out the USB Drive that is plugged in right now that I tried these steps on? The solid green light is on, and I'm wondering if I can just pull it out without causing any damage to the motherboard.
Pretty sure a solid light means the procedure didn't start. The light should be OFF when it's done.
You can shutdown the system. It's fine. The BIOS flashback didn't work or should I say didn't start.
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By the way have fun with that 5600X when it post! :)
Thank you!
Jeff Geerling
jeffgeerling.com › blog › 2023 › trying-every-combination-flash-my-asus-motherboards-bios
Trying every combination to flash my ASUS motherboard's BIOS - Jeff Geerling
February 15, 2023 - tl;dr: Use an old-fashioned USB 2.0 flash drive, format it FAT32, download the firmware, make sure it's named correctly, and use the motherboard's 'BIOS Flashback' option after powering off the computer. This past week, I devoted far too much time to the task of updating my brand new motherboard's BIOS. It started with a combo deal from Micro Center: a ASUS ROG Strix B650E-F Gaming WiFi motherboard, a Ryzen 9 7900x CPU, and a G.Skill Flare X5 Series 32GB DDR5-6000 memory kit, all for $599.
Asus
rog-forum.asus.com › t5 › z170 › the-flashback-button-does-not-seem-to-work › td-p › 619450
The flashback button does not seem to work - Republic of Gamers Forum - 619450
March 7, 2024 - Following your instructions, if I have understood correctly I have done this: 1. Download the bios from the official asus page. 2. Unzip the file 3. Rename the file to M8H.CAP 4. Formatting a flash drive in FAT32 (ALSO I TESTED WITH NTFS) 5. Copy only the M8H.CAP file to the pendrive 6. Turn off the computer, leaving the power supply ON 7. Clear CMOS. 8. Power Off PSU 9. Insert the Pendrive into the flashback port 10.
Reddit
reddit.com › r/buildapc › what does bios flashback button on asus strix b550-f do?
r/buildapc on Reddit: What does bios flashback button on Asus strix B550-f do?
August 2, 2020 -
Hello,
I just built my pc with a B550-f and theres a button “bios flashback” what is it? I just press on it and it puts my bios up to date?
Visioncomputers
visioncomputers.com › asus-ez-flash-vs-bios-flashback
ASUS EZ Flash 3 vs. BIOS Flashback: Which One Should You Use? | Vision Computers | Vision Computers
March 22, 2026 - ASUS gives you two ways to update ... BIOS setup screen and works when your PC already boots. BIOS Flashback uses a physical button on the rear I/O and works even without a CPU, RAM, or GPU installed....
Reddit
reddit.com › r/pcmasterrace › what exactly is bios flashback
r/pcmasterrace on Reddit: What exactly is Bios Flashback
November 19, 2024 -
Hi, I have an Asus TUF B650 Plus Wifi motherboard and want to build my first pc. I now heard my friends talk about Bios Flashback. Can someone tell me what that is and how and why I should do it?
Top answer 1 of 3
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Normally to be able to update the BIOS of a motherboard, you need the system to be operating normally. You can then update the BIOS either from the BIOS itself or (less recommended or done these days) from Windows. Of course, this requires a processor compatible with the motherboard. BIOS Flashback offers a different way to update the BIOS, where you don’t require any component AT ALL, apart from the motherboard and the power supply ; and the BIOS files on a USB drive. This lets up update the BIOS in case it’s needed to add support for the CPU you just bought alongside the MB, which is sometimes required before it can work AT ALL with it.
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It's a backup of bios, usually being use to reset the system that cannot be start due to radical overclock setting, electricity being cut off during bios update, buying a new CPU but forgot update bios before it and has thrown the old one away. If you can prevent above things from happened, you probabily won't need it.
Asus
rog-forum.asus.com › t5 › gaming-motherboards › asus-z790-h-bios-flashback-led-blinking-and-pc-not-starting-no › td-p › 1063107
Solved: ASUS Z790-H Bios flashback LED blinking, and pc no... - Republic of Gamers Forum - 1063107
January 7, 2025 - 3) Press and hold the Bios Flashback button until the led starts blinking, then release. The blinking should get faster as it goes then stop when completed, should take a few minutes.
Tom's Hardware Forum
forums.tomshardware.com › home › motherboards
[SOLVED] - Asus bios flashback button | Tom's Hardware Forum
November 7, 2021 - Hello, i could only find partial info about that. The manual says that I need to shutdown the pc, insert the flash drive and then press the flashback button for 3 seconds. A led near the button, should give an indication about what is going on. But the led stays dark and I get no reaction at all.
Amazon
amazon.com › ROG-B550-F-II-Motherboard-Addressable › dp › B09GP7P1XS
Amazon.com: 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) : Electronics
Buy 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): Motherboards - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
ASUS
zentalk.asus.com › t5 › faq › motherboard-how-to-use-usb-bios-flashback › ta-p › 407651
[Motherboard] How to use USB BIOS FlashBack™? - ASUS - ZenTalk - 407651
October 7, 2025 - 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. Requirements Tool: Prepare a USB flash drive with a capacity of 1GB or more. *Requires a single sector USB flash drive in FAT16 / 32 MBR format. To provide you more detailed instruction, you can also click ASUS Youtube video link below to know more about How to use USB BIOS FlashBack™
Asus
asus.com › us › support › faq › 1054166
[Motherboard/Desktop PC/Gaming DT] ASUS EZ Flash Introduction | Official Support | ASUS USA
4 weeks ago - ASUS EZ Flash allows you to easily update the BIOS version.
H|ard|Forum
hardforum.com › [h]ard|ware › motherboards
ASUS USB BIOS Flashback | [H]ard|Forum
July 13, 2014 - I just put together a new PC and wanted to share something I've come across with ASUS's USB BIOS flashback. Essentially, it's a BIOS/UEFI flashing method without powering on the system. Great if the motherboard won't POST for whatever reason. Plug in a USB stick with a BIOS image, press a button ...
Asus
rog-forum.asus.com › t5 › gaming-motherboards › bios-flashback-blinking-can-t-power-on › td-p › 1067009
BIOS flashback blinking / can't power on - Republic of Gamers Forum - 1067009
January 7, 2025 - Hi! I'm not able to power up the PC because BIOS Flashback randomly starts up while the PC is off, as if the button was pressed. The problem is that not only does Flashback start on its own, but it also loops forever, preventing the PC from starting (the power button is disabled while the Flashback ...
Overclock.net
overclock.net › home › forums › amd › amd motherboards
Asus USB BIOS Flashback? | Overclock.net
The Asus USB bios flashing has worked just fine for me. And, no, you don't need an OS installed.
ASUS
asus.com › microsite › 2014 › mb › new_4th_gen_intel_processor_compatibility
Update your ASUS 8 Series motherboard UEFI BIOS in a flash
Two-step check list: 1. Is your motherboard on the ‘supported model list’? Click the button below to find out 2. Choose your update method – USB BIOS Flashback or in-BIOS updater ... Visit the ASUS website, at www.asus.com/support then download the relevant BIOS file for your motherboard.
ASUS
asus.com › support › faq › 1012815
[Motherboard/Desktop] ASUS EZ Flash 3 - Introduction | Official Support | ASUS Global
ASUS EZ Flash 3 program allows you to easily update the BIOS version, save BIOS file to USB flash drive.
Linus Tech Tips
linustechtips.com › the workbench › troubleshooting
BIOS flashback on ASUS motherboard - Troubleshooting - Linus Tech Tips
January 30, 2026 - I feel like I am the dumb one here. I got an X870-P WiFi that I could not get to POST so I tried to flash BIOS and didn't get anywhere with that. I returned the motherboard and got an ASUS TUF Gaming X870-PLUS WiFi and I can't get the BIOS flashback to work in it either. Maybe I am doing it wrong...
Root Nation
root-nation.com › root nation › articles › technology › how bios flashback saved my pc (and two other useful asus technologies)
How Flashback BIOS saved my PC (and other ASUS features) - Root-Nation.com
The BIOS Flashback feature is commonly ... B850-E Gaming WiFi. Its main purpose is to allow users to update or restore the BIOS/UEFI without needing to access the graphical interface – or even having a CPU installed in the ...
Published March 30, 2025