Is it a slow flash or a fast paced flash? Either way, the system is having issues with the USB stick. If you have another one and access to another working computer, try following this video ... https://youtu.be/O8MwV-3oWzY Anyway, with the BIOS Flashback feature, you can try updating the BIOS as many times as you want without fear of bricking the board because the feature is designed to add official CPU support and revive bricked or corrupted boards. That's not to say it isn't failsafe, but it is much better than not having it at all. I've seen BIOS Flashback work using different devices such as USB SD card readers. Answer from senpaisai on reddit.com
🌐
Reddit
reddit.com › r/msi_gaming › red light keep flashing during bios flash
r/MSI_Gaming on Reddit: Red light keep flashing during BIOS Flash
April 25, 2025 -

Hi everyone,

I just bought a Ryzen 7 9800x3D with an MSI X670e Gaming Plus Wifi mobo.

During first boot the CPU debug light went red. I was expecting this since the CPU is quite new and mobo BIOS is probably not to date. So I tried flashing the most recent one on my new mobo.

It's not my first time, it usually goes fine. I use an old Imac to format a 4Gb usb key to FAT32, download new bios, rename the exec MSI.ROM, put on the key, plug it on the flash USB port and hit the flash button.

Problem is, the red light start bliking but never stops or acclerate or slow down. It just keeps blinking for hours

What should I do ?

Full config : Ryzen 7 9800x3D MSI X680e Gaming Plus wifi 2x16Gb DDR5 Corsair Vengeance RGB 6000MT/s RTX 4090 MSI gaming trio RM 850w Corsair

🌐
Reddit
reddit.com › r/msi_gaming › pc won’t boot + flash bios blinking forever
r/MSI_Gaming on Reddit: PC won’t boot + Flash BIOS blinking forever
March 7, 2024 - Clearing CMOS would've fixed the bad XMP/expo...since that doesn't, have to assume bad BIOS flash. I'd reformat the stick with fat32. Pop the file on there. Follow the manual to the T for using the flashback-and don't call it dead until 15 minutes ...
🌐
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 - That's odd then. Usually what you are experiencing means either the file is either not in the correct location in the USB, isn't properly named or the file is corrupt. Is the file in a folder in the USB?
🌐
Reddit
reddit.com › r/msi_gaming › bios flash is taking forever
r/MSI_Gaming on Reddit: Bios flash is taking forever
July 19, 2025 -

I have the mother board MSI MPG B550 GAMING PLUS I tried updating the bios using MSI center but it took over an hour so I figured I would just turn off the pc and use the bios flash button (I know it's a bad idea but it was stuck) now when I try to flash the bios the red led keep flashing and the dram led is on but it's still taking forever more than an hour I tried downloading an old bios into the USB iam using the fat32 format changed the name of the file to MSI.ROM and I even took all the parts off (CPU, GPU, ram, ssd) but still nothing works is it dead or is there still hope

Top answer
1 of 5
9
It's bricked. You'll need to use BIOS Flashback to recover. For this to succeed with the highest compatibility rate, you'll need a SanDisk or Lexar USB 2.0 flash drive under 32gb -- it can't be a 3.x flash drive -- and partitioned as MBR and formatted to FAT or FAT32. Both NTFS and exFAT are not compatible. FAT is for storage devices under 4GB in capacity and have the highest compatibility. FAT32 is for storage devices over 4GB but under 32GB and most flash drives fresh out of the package default to this configuration. For best results, insert the flash drive into a computer with a working Windows environment and use Diskpart's "clean" and "convert MBR" commands on the flash drive to ensure it is wiped clean. Then use Disk Management to create a new simple volume, entire capacity, formatted to FAT32, give it a drive letter, but no label. From here, copy and paste both the "msi.rom" file and the readme file to the root of the flash. The presence of the readme file can help fool BIOS Flashback into detecting the flash drive as an old school USB HDD and some people have had success that way. Safely eject the USB stick into the BIOS Flashback port and with the power off, press and hold the button for 2 seconds. The LED behind the BIOS Flashback port should slow blink first for a few moments then start blinking faster. The fast blink means BIOS Flashback is reading the "msi.rom" file from the USB and reprogramming the BIOS - it should fast blink for 5 to 7 minutes straight. Then it should go back to a slow blink pattern for about 15 seconds and finally stop blinking. You may also hear a click from the PSU indicating the BIOS update succeeded and the motherboard shut off. It's now safe to remove the USB stick and boot up. Give your board up to 90 seconds to memory train and reboot 2 or 3 times but once you see an underscore cursor in the top left corner of your display, your system is about to POST and display the MSI "Pro Series" logo. Press DEL at this underscore cursor to automatically enter the BIOS. You may get a screen of text saying "New CPU detected. Press F1 to clear the fTPM or F2 to continue". Press F1 here instead.
2 of 5
4
Are you using the correct USB port? This is why we always warn people not to use MSI Center for BIOS updates (or anything TBH) You might find this thread useful
🌐
Reddit
reddit.com › r/msi_gaming › bios flash solid white led
r/MSI_Gaming on Reddit: BIOS Flash Solid White LED
April 28, 2023 -

Hey guys, trying to use the flash button on my Mag Mortar B650M.

I downloaded the file and put it onto a USB drive and renamed the file MSI.ROM.

I stuck it in and press the Flash bios button and the white LED blinked for a bit, the PC turned on, but now the LEd is just solid white.

All the videos online had a red LED, what does this mean?

🌐
Reddit
reddit.com › r/buildapc › flashing bios, light flashed for only 15 seconds then turned off (msi z690-a wifi)
r/buildapc on Reddit: Flashing Bios, light flashed for only 15 seconds then turned off (MSI Z690-A Wifi)
July 31, 2023 -

I'm trying to flash the bios of the MSI Z690-A Wifi Motherboard and when I pressed the flash bios button the led only flashed for ~15 seconds before turning off. Does that mean the flashing worked or did I do something wrong?

Find elsewhere
🌐
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.

🌐
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 - i know you said you formated the ... bios to fully install.. try 1 more time.. wait upto 40 minutes. .. if it still blinking the red light it could be its still checking.....
🌐
Reddit
reddit.com › r/msi_gaming › what does a solid red flash bios led mean after flashing?
r/MSI_Gaming on Reddit: What does a solid red Flash BIOS LED mean after flashing?
November 14, 2023 -

After inserting a USB with MSI.ROM into the correct port and pressing the Flash BIOS button, the PC boots with the Flash BIOS LED blinking. After 5-10 minutes the PC restarts automatically with the Flash BIOS LED solid red.

Does this mean that the flash was successful or a failure? I ask since I couldn't get my motherboard to POST after switching from a Ryzen 3600X->5600X and tried flashing the BIOS to fix that. Now it won't post with either the new OR old CPU!

For reference, my motherboard is a B450 Tomahawk Max and the debug LED is stuck on CPU.

🌐
MSI
forum-en.msi.com › home
Stuck on eternal bios flash button blinking
August 3, 2022 - PRO B760M-P DDR5 no audio after latest BIOS update · Latest: Svet · Yesterday at 21:52 · MSI Intel boards · Threads · 294,304 · Messages · 1,906,648 · Latest member · cdspeight160302f1 · Facebook X (Twitter) Reddit Pinterest Tumblr WhatsApp Email Share Link ·
🌐
Reddit
reddit.com › r/msi_gaming › msi 8 blinks flash bios
r/MSI_Gaming on Reddit: msi 8 blinks flash bios
November 8, 2025 -

I have mpg x870e carbon wifi with 9950x it will not boot red and orange light turns on

Im trying to do a bios flash I downloaded the file from https://www.msi.com/Motherboard/MPG-X870E-CARBON-WIFI/support I went to properties click unblock then unzip the file renamed it to MSI.ROM made sure my usb is fat32 32gb copied it and when i click boot it flashes 8 times and stops I tried everything single thing but it wont work

🌐
Reddit
reddit.com › r/msi_gaming › msi tomahawk b450, bios flashback, led blinks twice then stays solid?
MSI Tomahawk b450, BIOS flashback, LED blinks Twice then stays Solid? : r/MSI_Gaming
July 29, 2019 - The thing thats making me crazy, ... and it used to work, and now its just dead. F. ... LEDs blinking twice or even 3 times means that the mobo is not detecting your usb drive....
🌐
Reddit
reddit.com › r/pcmasterrace › bios flashback on motherboard just keeps blinking forever
r/pcmasterrace on Reddit: BIOS flashback on motherboard just keeps blinking forever
May 8, 2024 -

Tried to update my BIOS using MSI Center but it won't boot and gets stuck on CPU in the EZ Debug LED, so I tried flashing back my BIOS. Everything I have tried has been unsuccessful so far. I used three different USB sticks, a 16gb stick I found lying around my house, an 8gb stick that I have used before to install Windows and do BIOS updates using MFLASH and BIOS Flashback, and a 64gb stick from a friend who also used it to install Windows and do BIOS updates on an MSI motherboard. All three sticks are formatted to FAT32 using MBR partition table.

I've tried clearing the CMOS, reseating my power cables, using a much older BIOS, removing everything and plugging only the ATX and CPU power cables, but nothing worked--BIOS flashback led still blinking forever. After removing and plugging only the ATX and CPU power cables, I kinda noticed that the IO heatsink gets really warm. Any ideas?

My relevant hardware:

MB: MSI MAG B550M Mortar WIFI MS-7C94 version 1.2
CPU: Ryzen 7 5800x
PSU: NZXT C750 80+ Gold
RAM: 2x8GB Crucial Ballistix 3600 MHz CL16

Also: I already considered to get warranty or RMA, but the unit is more than 2 years old, and the warranty module on the MSI website tells me to contact the shop I bought it from, which unfortunately has been closed for at least a month or a few months now lol unlucky

🌐
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.

🌐
Reddit
reddit.com › r/msi_gaming › bios flash turns on computer
r/MSI_Gaming on Reddit: Bios flash turns on computer
August 21, 2024 - Had the same problem this weekend. I had to rename the bios file to "MSI.ROM", this would then install the bios update.
🌐
Reddit
reddit.com › r/msi_gaming › bios flashback turns pc on and then nothing happens
r/MSI_Gaming on Reddit: Bios flashback turns pc on and then nothing happens
November 13, 2024 -

Hi, i bought ryzen 5 5600 and MSI b450m mortar and it doesn't work, cpu light is on all the time and nothing happens on the screen, not even "no signal" is there. I tried updating the bios thru bios flashback with USB stick but only thing that happens is pc turning on na then nothing i spent 5 hours trying to update the bios and I did everything watching all "how to" did everything that they said and still nothing, flashback Led light doesn't even flashes once. Someone please help me and tell ma what to do becouse i'm going INSANE. USB stick 128gb fat32

sorry if something is hard to understand but I'm irritated and English is not my native language