asus bios flashback taking a long time

reddit.com › r › buildapc › comments › s5wt8f › how_long_does_bios_update_take

Ooof. I hope it finishes for you. It should reboot after it is done by itself. I hope it comes back up one way or the other. Firmware probably wouldn't fix a boot failure that happens out of the blue that clearing the CMOS wouldn't fix. The good news is that the board has a recovery firmware image normally (Q-LED code F0 through F4 for the BIOS attempting to use the recovery image). The LED you are talking is the Flashback LED (in between the Flashback button and the USB port) or the Q-LED (which displays the code and is located below the bottom most long PCIE x16 slot)? What I hope is happening is that you didn't unzip the firmware on the USB and it hasn't actually started flashing the BIOS. What you are supposed to do is unzip the file and either run the BIOSRenamer.exe file OR manually rename the .cap file to SX570EG.CAP on your USB stick. You then put your USB stick into the Flashback USB port (the very bottom one) and then press and hold the Flashback button for 3 seconds. Once the LED flashes 3 times and then starts flashing the BIOS. If you didn't rename the file, then I'd probably power it off since it has been roughly an hour, rename the file, clear the CMOS which will reset BIOS settings to the defaults and try to flash again. Though flashing the CMOS is optional and isn't always required, I definitely recommend it. You can clear the CMOS by completely powering down the PC, unplugging it and waiting about 10 seconds. All of the LED's should be off at this point and capacitors discharge. Now locate the CLRTC jumper pins (should be just 2 pins) located to the right of the bottom long PCIE x16 slot, left of the SATA connectors, Below the M.2 slot and above the RGB_HEAD2 pins. Apparently ASUS didn't make this a 3 pin with a jumper just sitting there for you to use, so you'll have to use something like a screw driver and lightly touch it between both pins at the same time (no pressure needed, it just needs to touch both) for a second. Now remove the screw driver and plug the cord back in try to do the Flashback process again. There is a CMOS battery, after powering down, that you can pop out to do the same thing but I wouldn't recommend it since the cradles can sometimes break easily when trying to get the battery out and the only way to fix that is to re-solder it back into place. Plus it is between the top two PCIE x16 slots and probably inconveniently under your GPU. IF your BIOS flashes and comes back up, it may still fail to boot due to the original problem. If that happens, find your Q-LED display (not the Flashback LED) and check the Q-Code table in the appendix of your motherboard manual to figure out why it is failing POST. Hopefully it is just 50 up to 55 and you just need to reseat your RAM sticks. You can also follow the POST process as it does its different test by watching the codes progress. If it was E8 thru EB, then the CMOS reset should have fixed that anyway. Good luck! Answer from Deleted User on reddit.com

reddit.com › r/buildapc › how long does bios update take?

r/buildapc on Reddit: How long does BIOS update take?

January 19, 2022 -

I have Asus X-570 E-Gaming. The mobo was showing green Q-LED today, I came to know it's because of failed boot. So, I'm updating the BIOS(firmware or host boot software). The size of the flash file is 32 MiB and the flash drive used is 2.0 one. It's been 22 min now and the green LED(which indicates the BIOS is being flashed) still hasn't gone off, and now I'm worried. What to do?

For reference:

Asus X570 E-Gaming, GSkill RipJaws 32 GiB DDR4 @ 3200MHz, Ryzen 5 3600, Samsung 980 Pro PCIe4 SSD, DeepCool 850W PSU, Zotac RTX 3090 Trinity

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Ooof. I hope it finishes for you. It should reboot after it is done by itself. I hope it comes back up one way or the other. Firmware probably wouldn't fix a boot failure that happens out of the blue that clearing the CMOS wouldn't fix. The good news is that the board has a recovery firmware image normally (Q-LED code F0 through F4 for the BIOS attempting to use the recovery image). The LED you are talking is the Flashback LED (in between the Flashback button and the USB port) or the Q-LED (which displays the code and is located below the bottom most long PCIE x16 slot)? What I hope is happening is that you didn't unzip the firmware on the USB and it hasn't actually started flashing the BIOS. What you are supposed to do is unzip the file and either run the BIOSRenamer.exe file OR manually rename the .cap file to SX570EG.CAP on your USB stick. You then put your USB stick into the Flashback USB port (the very bottom one) and then press and hold the Flashback button for 3 seconds. Once the LED flashes 3 times and then starts flashing the BIOS. If you didn't rename the file, then I'd probably power it off since it has been roughly an hour, rename the file, clear the CMOS which will reset BIOS settings to the defaults and try to flash again. Though flashing the CMOS is optional and isn't always required, I definitely recommend it. You can clear the CMOS by completely powering down the PC, unplugging it and waiting about 10 seconds. All of the LED's should be off at this point and capacitors discharge. Now locate the CLRTC jumper pins (should be just 2 pins) located to the right of the bottom long PCIE x16 slot, left of the SATA connectors, Below the M.2 slot and above the RGB_HEAD2 pins. Apparently ASUS didn't make this a 3 pin with a jumper just sitting there for you to use, so you'll have to use something like a screw driver and lightly touch it between both pins at the same time (no pressure needed, it just needs to touch both) for a second. Now remove the screw driver and plug the cord back in try to do the Flashback process again. There is a CMOS battery, after powering down, that you can pop out to do the same thing but I wouldn't recommend it since the cradles can sometimes break easily when trying to get the battery out and the only way to fix that is to re-solder it back into place. Plus it is between the top two PCIE x16 slots and probably inconveniently under your GPU. IF your BIOS flashes and comes back up, it may still fail to boot due to the original problem. If that happens, find your Q-LED display (not the Flashback LED) and check the Q-Code table in the appendix of your motherboard manual to figure out why it is failing POST. Hopefully it is just 50 up to 55 and you just need to reseat your RAM sticks. You can also follow the POST process as it does its different test by watching the codes progress. If it was E8 thru EB, then the CMOS reset should have fixed that anyway. Good luck!

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3-5 minutes in my experience. I've also had a BIOS flash seem like it was taking way too long. And it wasn't going to finish. It wouldn't boot. So I did clear CMOS and retried the flash. It worked the 2nd time. Gigabyte B550 Aorus Pro for reference.

Asus

rog-forum.asus.com › t5 › hardware-build-advice › how-long-does-ittake-to-update-bios › td-p › 624801

how long does ittake to update BIOS? - Republic of Gamers Forum - 624801

March 5, 2024 - A few seconds usually means the USB is not in the correct USB port, the file name is incorrect or the USB inst formatted or has other stuff on it besides the single CAP file (should be nothing else) Also try and use a small capacity USB.

Videos

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How to Use USB BIOS FlashBack™? | ASUS SUPPORT - YouTube

According to quick googling, solid light means the process didn't start or failed. It should blink and then turn off if it's successful. Try again and if it doesn't work, check the USB if it's formatted correctly and the bios file is renamed.

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Did you try looking at it and saying out loud "what the hell"?

Visioncomputers

visioncomputers.com › asus-bios-flashback-looping

ASUS BIOS Flashback Looping Fix | Vision Computers | Vision Computers

March 22, 2026 - Your ASUS motherboard's BIOS Flashback LED has been blinking for 20 minutes, 40 minutes, maybe over an hour. The process should take 3 to 8 minutes. If that LED is still cycling, something went wrong and the flash is not progressing. This guide walks you through every cause of a BIOS Flashback loop, from a physically shorted button to a corrupt BIOS file, and shows you how to break the cycle safely.

reddit.com › r/asus › bios flashback blinking for hours

r/ASUS on Reddit: BIOS flashback blinking for HOURS

September 29, 2022 -

It’s been 2 hours since I started the BIOS flashback. It’s just been blinking this whole time. No feedback on the monitors; no indication of failure or success. I think I may have formatted my thumb drive incorrectly, but shouldn’t that give me a failure? How long should I let this continue for? How can I safely stop it?! Here’s a little video.

The board is a ROG crosshair viii dark hero.

SOLVED: I got on tech support with ASUS and they told me to press the cmos reset button, so I did that, redid the flash correctly, then after some bios settings, I'm back in Windows. Phew! If you're thinking of doing a bios flash and you're in windows, USE THE EZ FLASH THING! This sucked! <3

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I got on tech support with ASUS and they told me to press the cmos reset button, so I did that, redid the flash correctly, then after some bios settings, I'm back in Windows. Phew! If you're thinking of doing a bios flash and you're in windows, USE THE EZ FLASH THING! This sucked! <3

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Usually its done in 10 minutes,and flashing rapidly, usb stick must be mbr and fat32,and bios renamed

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 - ASUS’s BIOS flashback is one of the easiest to do, as ASUS motherboards come with a dedicated USB BIOS flashback port and button. Insert the USB flash drive, which contains the flash file, into the USB BIOS flashback port (indicated with white border and BIOS text) and press the USB BIOS flashback button for at least 3 seconds until you see the flashback LED start blinking (to be precise, it will blink 3 times).

Tom's Hardware Forum

forums.tomshardware.com › home › motherboards

[SOLVED] - ASUS BIOS Flashback | Tom's Hardware Forum

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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!

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Asus

asus.com › us › support › faq › 1038568

[Motherboard] How to use USB BIOS FlashBack™? | Official Support | ASUS USA

April 9, 2026 - *The BIOS file size will affect the update time. It can be completed in 8 minutes. Please do not remove the USB flash drive, unplug the power supply, turn on the power or press the CLR_CMOS button during the execution. This will cause the update to be interrupted and the system will not boot. (Ex: ROG CROSSHAIR VII HERO model, Flashback indicator flashes)

reddit.com › r/buildapc › my bios flashback has been running for well over 20 minutes, should i be concerned?

r/buildapc on Reddit: My BIOS flashback has been running for well over 20 minutes, should I be concerned?

November 25, 2022 -

ASUS X670E-I motherboard with an AMD 7700X. I'm updating to the BIOS that was released today.

I plugged in the USB to the external Hive, started the flashback, and the light has been solid (indicating that flashback is working) for over 20 minutes now. When do I get concerned?

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LOL definitely something went wrong. I'd say reboot and flash again. As long as you know the flash isn't corrupt, in which case download a fresh copy.

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This happened to me before and got scared that i bricked the mobo. But since it is taking too long like 1 hour or so i decided to just reboot the pc forcefully and it works, maybe something is stuck with the process so it does not go thru to the updating the bios yet and it just go to a black screen that is frozen. I hope that is the case for you as well though.

ASUS

asus.com › support › faq › 1053582

[Desktop] How to use USB BIOS FlashBack™ Update BIOS? | Official Support | ASUS Global

July 12, 2024 - 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™ process has started. Note: The update time may vary depending on the size of the BIOS file, but it is estimated to be completed within 8 minutes.

H|ard|Forum

hardforum.com › [h]ard|ware › motherboards

bios flashback question, asus z690-f | [H]ard|Forum

February 22, 2024 - I tried going from 2802 to 3302 (skipping one intermediate BIOS), following Asus' video on YT: run the bios renamer, copy the .cap file to the root of a flash drive, plug said drive into the correct motherboard port, turn the power off, hold down the flashback button until the LED next to it blinks, then wait until the light goes out. Normally, flashing from within the bios takes a couple of minutes, but the flashback process has been running at least 20 minutes now and the LED is still on solid.

Tom's Hardware Forum

forums.tomshardware.com › home › motherboards

HeLp !! Problems with USB Bios Flashback. How long does it take?? [ROG Maximus VIII Hero Alpha] | Tom's Hardware Forum

March 13, 2016 - polar papa you did not rename the usb flashback file right. the usb flashback will take 2-3 min of the port flashing then it turn off. if it blinks and turns off the file is not names right or the usb stick is not fat32 formated or the bios file name not in the root of the usb stick or the ...

Super User

superuser.com › questions › 1699672 › how-long-can-bios-update-take

firmware - How long can BIOS update take? - Super User

January 17, 2022 - It's an hour since you asked, and that's definitely too long for a normal BIOS update. So, what to do: I would take a chat with Asus support

Facebook

facebook.com › groups › ASUSPCDIY › posts › 6205359029547132

How long does the bios flashback take on the Hero Z90?

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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 - Hello everyone TODAY I HAVE A BIG PROBLEM just 1 hour ago i was in BIOS#1 and i was changing one of my overclock settings and SO WERIDLY 😮 SUDDENLY the bios freezed ( no matter repluging keyboard or mouse wasnt the issue ) and i had to restart the pc and after i just restarted the pc it gave me error Qcode 53 [with Dram Alarm beeps] at the start of the debugger AND then i tried SAFE BOOT BUTTON and it stiill didnt boot and gave the same error and after that i cleared CMOS 100 times and it didnt work THEN i decided to Do FLASHBACK BIOS i have 2 Sticks of usb one is usb 3 and one is usb 2 the

reddit.com › r/sysadmin › how long should a bios flashback take? i need to update the bios for this asus crosshair vii hero mobo to work with the ryzen 9 3900x, but it is taking longer than i expected.

r/sysadmin on Reddit: How long should a BIOS flashback take? I need to update the BIOS for this ASUS Crosshair VII Hero MoBo to work with the Ryzen 9 3900x, but it is taking longer than I expected.

November 19, 2019 -

I tried googling but I weren't able to find a good source. Does anyone of you have experience with this? Thanks in advance!

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r/homelab

r/techsupport

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If you were able to get worried enough to post and post, too long.

MSI

forum-en.msi.com › home

BIOS UPDATING BY BIOS FLASH BUTTON IS TAKING SO ...

MSI Global English Forum

reddit.com › r/msi_gaming › bios flashback with button taking forever

r/MSI_Gaming on Reddit: BIOS flashback with button taking forever

January 6, 2021 -

hello, I have the b550 a pro motherboard, and I have completely built up my system, I tried to run it and it didn't post which I expected because I am using a ryzen 5 5600x proccessor which needs a bios update. I installed the bios file from msi's official site and I have renamed it to MSI.ROM. I put the flashstick in the correct usb slot, pressed the BIOS button, the red light started flashing and fans started spinning, I waited 10 minutes still flashing, waited 20 minutes still flashing, waited a hour still flashing. I read some things online and people suggest to reset cmos battery which I did after stopping the flash. After I resetted the cmos, than started the BIOS flashback again. It was getting late at night and I decided to sleep while it is still flashing hoping it will end by the time I wake up, I was wrong it still was flashing when I woke up. any suggestions will be greatly appreciated. I hope I haven't bricked my motherboard by accident.

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UPDATE: I feel soo so dumb after finding out the problem, the problem was the 8 pin cpu connector wasn't fully connected into my modular power supply, if you have bios flashback problems be sure to check connectors if they are plugged in fully or not.

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still didnt work, also the ez debug light for cpu is on for some reason does this mean trouble?

reddit.com › r/buildapc › bios flashback still going for 30 minutes

r/buildapc on Reddit: Bios Flashback still going for 30 minutes

June 15, 2022 -

I recently bought an Asus tuf gaming b550-plus wifi and need to do a bios Flashback. The green light has now been flashing consistently for 30 minutes and looking online it seems it shouldn't take much more than 5. The motherboard currently has everything other than the GPU in it and I think it may have been flashing immediately once power was given to the motherboard. How can I safely stop the bios flashback and how can I do it again to avoid the problem?

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The flashing light is actually supposed to be red. B550F rog strix gaming led is red, both are Asus boards, so I don't see why Tuf flashing Led would be green. In any case, constant green Led means bios flashback error. As others have said, thee is no "safe way" to stop the bios flashback. Make sure you put the bios file renamed GB550PW.CAP (case sensitive). into a usb key formatted to fat32. put GB550PW.CAP into the root directory. Just flash it again and again. The Led (red) should flash and then go away, with the system automatically restarting. Someone who used MSI boards flashed his board 20 times until it worked. Or you just got a dud board.

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Which CPU do you have?

Overclockers

overclockers.com › home › forums › hardware › motherboards › intel motherboards

ASUS ROG HERO VII - Stuck in Bios FlashBack!!! | Overclockers Forums

November 30, 2016 - What say anyone about ASUS RMA?! Cheers! ... That was a fun video LOL. It probably will take 2-3 weeks for the motherboard turnaround. ... I'm with Wingman, that was funny. The longest I think I've ever had a bios flash take was around 5 min, but that was on an old Soyo KT333 MB.