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
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ASUS
asus.com › support › faq › 1038568
[Motherboard] How to use USB BIOS FlashBack™? | Official Support | ASUS Global
April 9, 2026 - A3: Please confirm if there are ... Q4: If the light flashes for five seconds and turns into a solid light, this means that the BIOS FlashBack™ is not operating properly....
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Reddit
reddit.com › r/asus › flashback solid green light
r/ASUS on Reddit: Flashback solid green light
December 9, 2020 -

Help me im about to smash this fucking motherboard to pieces its an ASUS x570 ROG STRIX F GAMING. Ive been trying for about 7 hours to flash my bios something ASUS claims take 5 mins using their flashback button. Well every single avenue ive tried I get 3 green flashes followed by a solid green light. Ive formatted my usb stick and set to FAT32. Ive tried windows and Bootice so far to no avail. Ive tried multiple USB sticks and it appears whatever has gone on my first USB stick I tried has been killed. Ive cleared the CMOS and tried again. Ive triple checked im downloading the right bios thats compatible with my motherboard after seeing someone else have this trouble. Ive tried with just the motherboard connected to the PSU, ive tried it as a full system with the new 5600x with the RAM and everything plugged in asif it was a working PC. Im at a complete loss, wait months for my new stuff to arrive for this shit to happen. Please please please can anyone offer any advice

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Reddit
reddit.com › r/asus › [solution] bios flashback issue with light becoming solid when it should be blinking
r/ASUS on Reddit: [Solution] Bios Flashback issue with light becoming solid when it should be blinking
January 9, 2021 -

Just leaving this here incase it helps anyone else.

Needed to update a recently bought ASUS ROG Crosshair VIII Hero X570 (non-wifi) to be able to use x5000 series CPUs.

First few attempts after following directions to put properly renamed via biosrenamer.exe .CAP file on USB were unsuccessful and produced a solid blue light after holding down the bios flashback button for three seconds/three blue blinks. (note: no cpu or ram attached to the board)

What ended up making it work was needing to do a bit more of an involved format job, windows device format alone wasn't effectively automatically reducing the USB to a single partition. This is actually a pretty critical step to ensure the motherboard reads the usb stick.

Not entirely necessary to format to FAT16, but that's what I tried at first. To do so, I used diskpart to remove the extra partition that was appearing, and also ensuring a single partion remained of size 4000 on it (command for this using diskpart with the proper partition and disk selected: "create part primary size=4000"). and then, going back to windows right-click format tool, formatted to FAT16 (also just called FAT) ensuring a single partition of size 4000 on it.

Just a possible solution to try for anyone else who has been frustrated by this.

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ASUS
asus.com › support › faq › 1053582
[Desktop] How to use USB BIOS FlashBack™ Update BIOS? | Official Support | ASUS Global
July 12, 2024 - If you are unsure where the USB BIOS FlashBack™ port is located, please refer to the user manual for your model. 9. Press and hold the BIOS FlashBack™ button on the rear panel for about 3 seconds until the BIOS FlashBack™ indicator light flashes 3 times, indicating that the BIOS FlashBack™ ...
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Asus
rog-forum.asus.com › t5 › rampage-vi-strix-x299-series › bios-flashback-not-working-at-all-please-help-solved › td-p › 758259
Bios flashback not working at all please help [SOL... - Republic of Gamers Forum - 758259
March 7, 2024 - allen001 wrote: q- code 53 means there is an incompatibility or problem with the RAM you selected. hi allen001 ,No its not any hardware issue or any Dram issue because it boots and works fine with BIOS#2 As i mentioned. my problem is with BIOS#1 ...
Find elsewhere
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Linus Tech Tips
linustechtips.com › computer hardware › cpus, motherboards, and memory
ASUS USB BIOS flashback solid light? URGENT! - CPUs, Motherboards, and Memory - Linus Tech Tips
August 8, 2015 - https://linustechtips.com/topic/425984-asus-usb-bios-flashback-solid-light-urgent/ More sharing options... Followers 1 · Go to solution Solved by Valkyrie Lenneth, August 8, 2015 · solid blue means its like finished for my board · blinking = flashing/working at it ·
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PCPartPicker
pcpartpicker.com › forums › topic › 392106-solid-green-light-whilst-updating-bios-on-asus-b550-e-motherboard-without-cpu
Solid green light whilst updating bios on ASUS B550-E motherboard without CPU - PCPartPicker
... Inserted usb stick in the slot next to the flash button on back panel of mobo. ... Switch on - lights come on indicating mbo is powered up. Hold down flash button for 3 seconds. Anyone notice if I missed something? Do you need to install previous bios versions?
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Reddit
reddit.com › r/buildapc › [urgent] can i remove the usb if the bios flashback light is solid?
r/buildapc on Reddit: [URGENT] Can I remove the USB if the bios flashback light is solid?
January 13, 2024 -

Like the title says. Can I remove the USB drive from the motherboard if the bios flashback light is solid (green in my case)? Can I remove it without hurting the motherboard?

Motherboard is the ASUS b550f ROG wifi with the 5600 installed.

Edit: unfortunately, it's not my pc, so I don't want to break anything, because I'll have to pay for damages and money is a bit tight at the moment

Edit 2: UPDATE: I have removed the USB drive and I didn't hear boom. At the time of posting this post, I was already waiting for 30 minutes. I watched this video and followed all the steps, inserted the drive again, held the button until it started blinking. At this point the light on the drive is blinking as well and it didn't do that before, so I think it's working. I'm at the end of writing this and the flashback light has stopped flashing, so I'm removing the drive right now.

Thanks everyone for commenting!

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H|ard|Forum
hardforum.com › [h]ard|ware › motherboards › intel mobos
USB BIOS Flashback Not Working | [H]ard|Forum
January 10, 2017 - Unfortunately USB BIOS Flashback exhibits the same behavior. Button flashes three times, then solid and no flash drive activity.
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TechLatest
tech-latest.com › home › tips & tricks › how to › what is bios flashback and how to use it?
What is BIOS Flashback and How to Use it? | TechLatest
August 29, 2025 - As I mentioned earlier, if you want to roll back or update to any BIOS version but you don’t have access to the GUI updater, then BIOS Flashback comes in handy. The USB BIOS Flashback process usually takes 1-2 minutes and maximum 3-5 minutes. The ...
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Asus
rog-forum.asus.com › t5 › gaming-motherboards › nib-rog-strix-x670e-e-bios-flashback-light-stays-green-for-hours › td-p › 1017300
Solved: NIB ROG STRIX X670E-E BIOS Flashback light stays g... - Republic of Gamers Forum - 1017300
May 17, 2024 - When it actually worked, I turned ... HP thumb drive, FAT32, filename is SX670EE.CAP. From cold, plug in PSU, install USB in BIOS port, turn on PSU, press and hold Flashback....
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Asus
rog-forum.asus.com › t5 › x99 › usb-bios-flashback-will-not-work › td-p › 578437
USB BIOS Flashback Will Not Work - ROG Forum - ASUS
March 6, 2024 - Cywok wrote: Cannot get the USB BIOS Flashback to work. Push the ROG Connect button and release when the light starts to flash. Light flashes 3 times and then goes dark.
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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 - Once you have the bios file on your usb flash drive: ... 3) Press and hold the Bios Flashback button until the led starts blinking, then release.
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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 - Are you renaming only the file and transferring only the file, not the folder to the root of the USB drive?* Other than that I've been clearing the cmos first so you are at default settings before flashing and I've been shutting the PSU off inserting the drive then switching it on followed by pushing and holding the flashback button until the button (also on M8E bios light) begins the flash on and off.
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ASRock
asrock.com › support › QA › FlashbackSOP.pdf pdf
Page 1 / 4 ASRock Flashback Feature User guide
Refer to the User manual for Flashback supported USB port. ... Press the BIOS Flashback Switch for about three seconds. Then the LED starts to blink. The BIOS update procedure will take few minutes. ... Wait until the LED STOPS blinking, indicating that BIOS flashing has been completed. * If the LED light turns solid ...
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MiniTool Partition Wizard
partitionwizard.com › home › partition magic › how to use bios flashback [asus, msi, gigabyte, asrock boards]
How to Use BIOS FlashBack [ASUS, MSI, Gigabyte, ASRock Boards] - MiniTool Partition Wizard
October 9, 2023 - In this case, reconnect the power supply, remove and plug the USB drive, and press the BIOS FlashBack button again. The light is not on. In this case, please make sure the USB drive is connected properly.