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
🌐
Reddit
reddit.com › r/asus › help! b550 tuf bios flashback led won't stop blinking
r/ASUS on Reddit: HELP! B550 TUF BIOS Flashback LED won't stop blinking
December 6, 2020 -

I flashed the bios with just the power supply and nothing else first and it seemed to go fine - blinked for a while and then stopped. I then put the rest of my build together and after turning on the power supply the BIOS flashback led won't stop blinking. I plugged the USB back in and pressed the button again and it blinked quickly and cycles between blinking quickly and slowly. The system will not post.

Parts:

Mobo: ASUS b550 TUF gaming

CPU: Ryzen 9 5900x

GPU: 3080 Strix

PSU: Corsair RM 850x

Memory: crucial ballistix 3200 mhz 32 gb

CPU cooler: Be quiet dark rock 4

SSD: SK Hynix m.2

🌐
Reddit
reddit.com › r/asus › help! bios flashback led is blinking and pc won't start
r/ASUS on Reddit: HELP! BIOS flashback LED is blinking and PC won't start
November 13, 2024 -

Last night I turned off my PC as usual, nothing strange happened, this morning I went to turn on the PC and it didn't start, not even the RGB, not anything. Then I noticed a green light blinking on the back, it was the bios flbk, I didn't know what it was until now that I researched it. Tried everything to fix it, removed de CMOS, used a screwdriver to turn it on, checked the button itself, I tried to update the bios with a flashdrive, unplugged all the cables from the back, move it to my table and I connected the USB on the bios port, and I let it run for several minutes, but after 30 minutes I thought my MB was dead, so I just let it there to do some other things, came back 2 hours later, pressed the power button, and it booted, I got excited, turn off the pc again, put it back at my desk, plugged everything back, and now it doesn't start again, I don't know whats wrong, its been another 30 minutes, and it's still blinking, am I doing something wrong? And how did this happen if I never have messed with the bios or this button?

Its an Asus prime x670-P WIFI

🌐
Asus
rog-forum.asus.com › t5 › overclocking-tweaking › bios-led-won-t-stop-flashing › td-p › 240002
Bios LED won't stop flashing - Republic of Gamers Forum - 240002
March 7, 2024 - If so please take a look at this guide, the RIVE requires a CAP converter as it is using ROM BIOS first: http://event.asus.com/2012/mb/USB_BIOS_Flashback_GUIDE/ ... It seems that that if you have the ROG connect cable plugged in on the motherboard, the update will blink forever...
🌐
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 - This stops the infinite loop as the LED stops blinking and becomes solid green, indicating that Flashback failed (obviously, there is no USB Drive inserted) and the power button is re-enabled.
Find elsewhere
🌐
Asus
zentalk.asus.com › t5 › motherboards › prime-b650m-a-wifi-bios-flashback-light-keeps-blinking-and-pc › td-p › 441606
PRIME B650M-A WIFI BIOS Flashback light keeps blinking and PC won't boot
October 4, 2024 - Then one day about 2 weeks ago I tried to boot the PC and it won't start, the rest go as I described in original post. So far turning off the powersupply for ~30s has consistenly worked and I could start the PC normally and no issue has ever happen during usage itself. Today I have also tried to just use the BIOS flashback to install the BIOS ver 3024 again but the LED was still blinking after an hour so I gave up and cut the power for ~30s again, after which the PC did boot normally but after shutdown the issue is happening again.
🌐
H|ard|Forum
hardforum.com › [h]ard|ware › motherboards › amd mobos
FLBK_LED started blinking after shutdown | [H]ard|Forum
March 29, 2021 - Normally, if you hold the button ... it off, sorry I'm not sure, possibly the button got inadvertently pushed. Maybe try removing all power for a while, or do a CMOS clear, or flash the BIOS (there's been a rash of new X570 Bios's lately anyway)....
🌐
Visioncomputers
visioncomputers.com › asus-bios-flashback-looping
ASUS BIOS Flashback Looping Fix | Vision Computers | Vision Computers
March 22, 2026 - The fix is to download the BIOS directly from the ASUS website rather than from third-party mirror sites. Files downloaded from mirrors occasionally have incorrect checksums. These boards use an older Flashback controller that is more sensitive to USB drive capacity. Drives larger than 16 GB frequently cause loops on Z490 and Z590 platforms. Use an 8 GB or smaller USB 2.0 drive. If the LED blinks three times and stops, the controller could not enumerate the drive at all.
🌐
Reddit
reddit.com › r/msi_gaming › hey all, when i attempt to do a bios flashback, it blinks three times and stays solid. see comments
r/MSI_Gaming on Reddit: Hey all, when I attempt to do a bios flashback, it blinks three times and stays solid. See comments
December 21, 2022 - Chose FAT32 with no label and no drive letter, and make sure to uncheck the "Quick Format" box because we want a pristine, virgin, stripped and waxed flash drive. It should take a few moments. After all of that, copy over your "MSI.ROM" file and give Flashback another go ...
🌐
Reddit
reddit.com › r/techsupport › bios flashback led won’t stop flashing
r/techsupport on Reddit: Bios flashback led won’t stop flashing
August 31, 2021 -

I just finished my first pc build and the bios flashback led won’t stop blinking. It only blinks when the computer is turned off. The motherboard I am using is the asus tuf gaming x570 pro wifi. Everything works on the computer as I would expect it to except for the flashing led. Any help is greatly appreciated.

🌐
Linus Tech Tips
linustechtips.com › the workbench › troubleshooting
MSI Flash BIOS Light won't stop blinking of 30 min! - Troubleshooting - Linus Tech Tips
August 25, 2021 - Hi there! So I have build my pc a hour ago or something but I needed to flash the bios on my MSI B550-A Pro motherboard because I have a Ryzen 5 5600X. I've put all the files on my 64GB 2.0 USB and put it in the USB port right of the Flash Button. Everything is installed and on the BIOS version i...
🌐
Tom's Hardware Forum
forums.tomshardware.com › home › motherboards
Question - BIOS flash stuck eternally on fast blinking, help needed, system won't boot | Tom's Hardware Forum
August 14, 2021 - Then I unplugged everything from the motherboard but the CPU and ATX power connectors, and it seemed to work. The flash bios led starts blinking, then the blinking gets faster and the cpu debug light comes on, and then it keeps blinking at the same rate for the rest of time, or at least for the 9 hours I gave it before trying a different usb.
🌐
Tom's Hardware Forum
forums.tomshardware.com › home › motherboards
Question - Flashing Bios - Continuously blinking (MSI B550 Gaming Plus) | Tom's Hardware Forum
January 17, 2025 - on some boards the blinking speed will slow as its nearly finishing.. (not on all boards).. . if its not done after the 40+ minutes. power of.. take out usb stick,, add cpu and ram, and power ok.. it should start to boot cycle. (training ram and going through the bios boot sequence.
🌐
Reddit
reddit.com › r/msi_gaming › for all the people with bios flashback issues read this!!! possible fix.
r/MSI_Gaming on Reddit: FOR ALL THE PEOPLE WITH BIOS FLASHBACK ISSUES READ THIS!!! POSSIBLE FIX.
July 16, 2019 -

I was tearing my damn hair out trying to make my motherboard flash the new BIOS (regardless of version as long as it supports 3000 series).

Like a lot of you guys I had issues where I knew I was doing everything right and following the instructions but it still wouldn't flash and some people had to switch usb drive, but if you are like me and only have one usb drive in your apartment and want to save yourself a trip to the store this is how I fixed it. If this turns out to be an actual fix for peoples flashing problems somebody should really make MSI post this along side their instructions!

Simply put it seems like you need to restore your USB drives to their original state (I won't pretend to know what that means but it seems like regular Windows formatting doesn't do that and so no matter how many times I formatted it would not work). I have a B450 GAMING PLUS but I think it should work with all your Tomahawks aswell.

To fix this follow these instructions to restore your USB; https://www.pendrivelinux.com/restoring-your-usb-key-partition/

(Just follow the instructions for Bootice and make sure its FAT32 as file system).

Use this tool to do it: https://www.majorgeeks.com/files/details/bootice_64_bit.html

It worked instantly when I plugged it in. I really hope this helps guys I was so happy to finally get it working and wanted to share the solution for me and hopefully for you too! V18 worked for me only because that's the one I had downloaded.

EDIT: Unfortunately, as is with all things AMD and MSI, the story doesn't have a happy ending. I keep getting Windows crashes on a fresh install and it's just crazy, can't even download Ryzen master or anything. Really disappointed in all of this, especially MSI.

🌐
ASRock
asrock.com › support › QA › FlashbackSOP.pdf pdf
Page 1 / 4 ASRock Flashback Feature User guide
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.
🌐
PCPartPicker
pcpartpicker.com › forums › topic › 466843-asrock-b650i-lightning-wifi-green-flashback-light-wont-stop-blinking
ASRock B650I Lightning WIFI - Green flashback light won't stop blinking - PCPartPicker
I put my USB flash drive in the ... the flashback button for about 3 seconds and a green blinking light appears. After waiting for about half an hour with no success that the light stop blinking, I removed the USB flash drive again. Now I'm here, absolutely clueless, and writing this. What did I do wrong? Isn't a green blinking light a sign that everything went well? Note: That USB flash drive is really old, about older than 10–15 years for sure, but it's working. I updated the BIOS of my current ...
🌐
Reddit
reddit.com › r/buildapc › bios flashback led doesn’t stop blinking
r/buildapc on Reddit: Bios flashback led doesn’t stop blinking
November 21, 2020 -

I have a MSI B550 Gaming Edge WiFi and I’m trying to flash the bios for the 5600x. I plug in the usb with the latest bios from MSI’s website and the led starts flashing. The led doesn’t stop flashing though even after 20 minutes.

The USB is formatted to be fat32.