B550 Tomahawk update bios failed

f.boisselie156b02db

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Nov 21, 2020
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Hello, i wanted to update the bios with version 7C91vA4 ontc M-Flash. This one worked fine and when the PC restarted I had a black screen and the EZ-DEBUG LED CPU would stay on. I own a ryzen7 3700X. I wanted to do a reset of the original bios by plugging a jumper on JBAT1 on the motherboard, but the CPU LED remains on. I removed memory, CPU and SSD from the motherboard, and I attempted a bios update using the bios flash button by plugging in a USB key formatted in FAT32 type of key used USB1, USB2 and USB3 . The update led is flashing when it stops, the CPU LED of EZ-DEBUG LED is on but since there is no CPU plugged in it should be normal. The other RGB LEDs on the motherboard are also on. I don't know what to do, is it possible that the card is out of order?
 

pjpiju155f02d4

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I am having similar issues with B550M Mortar. Tried with Ryzen 3900x and 5800x, get red cpu debug light. BIOS flashing never stops, no matter what I try - the led is blinking forever. Please update if you find a solution to this, I have lost hope after spending 5 days on the issue...
 

f.boisselie156b02db

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Nov 21, 2020
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I will send it back to the supplier for an exchange because it has been a week since I have it. But that will only partially solve the problem
 

Alan J T

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Sep 11, 2020
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I am having similar issues with B550M Mortar. Tried with Ryzen 3900x and 5800x, get red cpu debug light. BIOS flashing never stops, no matter what I try - the led is blinking forever. Please update if you find a solution to this, I have lost hope after spending 5 days on the issue...
I will send it back to the supplier for an exchange because it has been a week since I have it. But that will only partially solve the problem
FOR FAILED BIOS FLASH


PC must be turned off for BIOS Flashback to be started do not turn on your PC the Bios Flashback will do it for you

If that Fails see directions below.

Following Directions are for windows based OS

Right Click on the Downloaded Bios Zip File, if you see the message this file is blocked by windows tick the box to unblock and click OK.

When in windows File Explorer make sure that you select the View tab and Tick the box Show Hidden Files and File Name Extensions.
Extract the BIOS file from the Downloaded ZIP file Open the folder it was extracted to.

Right click on the BIOS file, select copy and then paste it into a USB drive Formatted to FAT32,

When in Windows File Explorer make sure that you select the View Tab and Tick the box Show Hidden Files and File Name Extension.

Now rename the BIOS file to MSI.ROM

There should be no other files or folders on the USB drive, just the BIOS file you have renamed to MSI.ROM



OK turn off and PSU and remove the power cord. Carefully take the PC apart remove all the components from the case as well as the Motherboard Place on a cardboard box or insulated surface, and plug in the 24 pin and the CPU power plugs for the Motherboard. Do not plug in any other leads to the board.



Plug in and turn on the PSU

Wait about 2 minutes before next step just in case there is a power on and off cycle when you turn on the PSU

Plug the USB Drive in to the USB port just below the Bios Button,

Do not touch any Jumpers on the Motherboard

Push the FlashBack button and then release it,

About 5 seconds later a led just above the USB port will start to flash, after 15 seconds of so the speed of the flashing light will double this is the writing to the BIOS period.

Once done writing to the it will stop flashing and PSU will turn off

For 16MB BIOS it will take about 4 to 5 minutes, and flashing stops.

For 32MB BIOS it will take 6 to 7 minutes, and flashing stops.

People have said that it may turn back on if so just turn off and unplug the PSU.

And Bios should be flashed if just one of these steps does not happen it is a failed flash.



I always strip any partitions out of USB drives when I buy them, Delete the partition or Volume and then make a new simple volume and Format to FAT32 I do this with every USB drive I get as I detest the formatting and software on them done by the Manufacturers is more trouble than they are worth.

I Normally do this with Windows Disk Manager

simpvol.jpg
 

f.boisselie156b02db

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Nov 21, 2020
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I have formatted my USB drive each time to FAT32, the LED blinks when I want to flash BIOS, it blinks for 30 minutes or more. The keys used were USB1 USB2 then USB3 always the same. During these attempts I put the motherboard on its box without CPU, RAM or SSD I only connected the ATX power supply. And still nothing. The motherboard was delivered to me on Saturday November 14th, I will send it back for standard exchange. I tried your solution without success before reading your answer.
 

pjpiju155f02d4

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Nov 21, 2020
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I have formatted my USB drive each time to FAT32, the LED blinks when I want to flash BIOS, it blinks for 30 minutes or more. The keys used were USB1 USB2 then USB3 always the same. During these attempts I put the motherboard on its box without CPU, RAM or SSD I only connected the ATX power supply. And still nothing. The motherboard was delivered to me on Saturday November 14th, I will send it back for standard exchange. I tried your solution without success before reading your answer.
I feel you, my story is exactly the same. I am going to try a couple more USB drives - if it doesn't work, will be returning the mbo as well. Msi should definitely solve this, so many people are having issues...
 

marko.goren157202e3

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Joined
Jan 27, 2021
Messages
2
I am having similar issues with B550M Mortar. Tried with Ryzen 3900x and 5800x, get red cpu debug light. BIOS flashing never stops, no matter what I try - the led is blinking forever. Please update if you find a solution to this, I have lost hope after spending 5 days on the issue...
Hello.
Were you able to solve it? I have exactly the same issue with MSI B550 Gaming Edge Wifi.
I have tried all possible options, multiple usb sticks, nothing helps. Red led light keeps flashing forever.
Is this DOA?
I will return it to the seller.
 

Alan J T

GRUMPY OLD FART
Joined
Sep 11, 2020
Messages
2,587
Hello.
Were you able to solve it? I have exactly the same issue with MSI B550 Gaming Edge Wifi.
I have tried all possible options, multiple usb sticks, nothing helps. Red led light keeps flashing forever.
Is this DOA?
I will return it to the seller.

New revision

Some directions for you
I only use USB 3.0 drives of a known brand not mystery drives.
It appears that cheap mystery drives may be problematic.
FOR BIOS FLASHBACK
Following Directions are for windows based OS
Right Click on the Downloaded Bios Zip File, select properties if you see the message this file is blocked by windows tick the box to unblock and click OK.
When in windows File Explorer make sure that you select the View tab and Tick the box Show Hidden Files and File Name Extensions.
Extract the BIOS file from the Downloaded ZIP file Open the folder it was extracted to.
Right click on the BIOS file, select copy and then paste it into a USB drive Formatted to FAT32,
When in Windows File Explorer make sure that you select the View Tab and Tick the box Show Hidden Files and File Name Extension.
Now rename the BIOS file to MSI.ROM
There should be no other files or folders on the USB drive, just the BIOS file you have renamed to MSI.ROM
For more details see this post By Mattech
I always strip any partitions out of USB drives when I buy them, Delete the partition or Volume and then make a new simple volume and Format to FAT32 I do this with every USB drive I get as I detest the formatting and software on them done by the Manufacturers is more trouble than they are worth.

I Normally do this with Windows Disk Manager

However if you are having trouble Deleting the Partitions on you USB drive or you have a failed attempt pleas download and use Partition Magic to remove all partitions on the USB and then create a new a single partition formatted to FAT32
Or try as suggested by jaytripathi if that also fails.
QUOTE jaytripathi10156c02dd
This happened to me, so I used diskpart to clean the drive completely and format it to MBR and then I was able to flash it successfully.
Use these steps:
Open cmd as admin and type these commands one after another
Diskpart
list disk
select disk (id)
clean
convert mbr
create partition primary
select part 1
active
format fs=fat32 label=(name) quick
assign letter (letter)Just be careful not to erase the wrong drive.
QUOTE END

FlashBack can be used on a fully assembled PC even if CPU is one of the new 5xxx series.
PC must be turned off for BIOS Flashback to be started do not turn on your PC the Bios Flashback will do it for you
If that Fails see directions below.


OK turn off and PSU and remove the power cord. Carefully take the PC apart remove all the components from the case as well as the Motherboard Place on a cardboard box or insulated surface, and plug in the 24 pin and the CPU power plugs for the Motherboard. Do not plug in any other leads to the board.
Plug in and turn on the PSU
Wait about 2 minutes before next step just in case there is a power on and off cycle when you turn on the PSU
Plug the USB Drive in to the USB port just below the Bios Button,
Do not touch any Jumpers on the Motherboard
Push the FlashBack button and then release it,
About 5 seconds later a led just above the USB port will start to flash, after 15 seconds of so the speed of the flashing light will double this is the writing to the BIOS period.
Once done writing to the it will stop flashing and PSU will turn off
For 16MB BIOS it will take about 4 to 5 minutes, and flashing stops.
For 32MB BIOS it will take 6 to 7 minutes, and flashing stops.
People have said that it may turn back on if so just turn off and unplug the PSU.
And Bios should be flashed if just one of these steps does not happen it is a failed flash.
jukka.savilaaks154e02d4 said:
Just to check out if the MB even understands the drive itself I have also made some testing:
Wrong file format: (Ie. ExFAT, NTFS etc) the drive flashes, but no power to the motherboard.
Wrong file name: The USB drive led flashes few times, the flash LED flashes few times, but no power to the motherboard
Correct file format and name but other error: the USB LED flashes few times, The flash LED flashes few times, power turns on, USB flashes again few times, flash LED flashes two times and then turns on and stays on.
Successfull flash: same as above except flashing keeps on for several minutes, until the flash LED stays off
 

marko.goren157202e3

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Joined
Jan 27, 2021
Messages
2
Thank you for all the info.
I did everything possible, really, exactly everything.
Looks like that flashing is started ok, but then it keeps flashing forever.
If usb or file is not ok, then it doesn't start fast blinking for longer period.
Looks like I really have to return it. I am quite dissapointed with this...
 

Alan J T

GRUMPY OLD FART
Joined
Sep 11, 2020
Messages
2,587
Thank you for all the info.
I did everything possible, really, exactly everything.
Looks like that flashing is started ok, but then it keeps flashing forever.
If usb or file is not ok, then it doesn't start fast blinking for longer period.
Looks like I really have to return it. I am quite dissapointed with this...
Just a bit of bad luck most likely a dud Motherboard it does happen sometimes not very often but the odd board gets through Testing with a Pass only to fail when first used.
 
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