[SOLVED] X570 Tomahawk WIFI - BIOS Flashback fails, CPU Debug LED stays on

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Dec 19, 2020
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Not everybody has a Linux PC laying around :(. I also found a solution to my Bios issue. I took the motherboard back to the reseller and asked them to flash the bios (they sell this as an option). They were unable to do so and replaced the motherboard with a new one and flashed the bios to that one.

But now I have reverted back to my issue before the bios flash issue...
 

Alan J T

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SOLVED: the USB Stick and Windows was at fault here. All I had to do was to add the USB stick to a Linux machine, start up Gparted, create new Partition Table msdos = MBR, create new partition filling up ALL of the space and then finally add the file MSI.ROM to the drive. Only the Flag lba needs to be set (without it doesn't work).

The issue was caused for me by two unallocated 6MB partitions... Gee, thanks Windows.
Not really a windows problem but the manufacturer of the USB drives who do it to put there softwares on the USB derives Perhaps I should include a link for partition magic for strippin and formatting the USB drives. You can do it with Windows Disk Manager but it is not a very easy task to do with Disk Manager as it can be fiddly.
 

Alan J T

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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
New Directions thanks for the input

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 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.
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.
Successful flash: same as above except flashing keeps on for several minutes, until the flash LED stays off
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 and create a new a single partition formatted to FAT32
 
Joined
Dec 19, 2020
Messages
8
Not really a windows problem but the manufacturer of the USB drives who do it to put there softwares on the USB derives Perhaps I should include a link for partition magic for strippin and formatting the USB drives. You can do it with Windows Disk Manager but it is not a very easy task to do with Disk Manager as it can be fiddly.
Ok, just to clear things up a little. I tried rebuilding MBR and drives several times with several USB sticks with both Windows disk manager and Partition Magic without any success. I tried everything imaginable with these tools. I spent at least 12 hours trying out everything you could without success. Even the reseller failed to flash the bios with their USB drive on the faulty board and they used the same USB drive for the replacement motherboard with a success. I also had used one of the USB drives successfully for the same board earlier and hadn't done any changes to the drive after that. Since I am still experiencing other type of issue, I would expect these to be related. So when I figure out the root cause for my current issue (No POST, GPU error, Boot error, plank display) I probably can make some assumptions if it is the processor or power supply...

...and it was a stupid user error. 4-pin CPU power connector was from wrong side of the cable (the cable splits into two 4-pin ends).

The bios flash issue I had however was probably not related, since I only took the motherboard and the CPU to the reseller and I had flashed the motherboard earlier with the same configuration. Unless it is related to 5000 series CPU + Power connector + bios flashback which caused the flasher to get stuck. After that I was unable to flash the bios even without CPU on the socket.

At least my 5 day fight with new Ryzen has come to an end...
 
Last edited:

andrei.vn9152502db

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May 4, 2021
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SOLVED: the USB Stick and Windows was at fault here. All I had to do was to add the USB stick to a Linux machine, start up Gparted, create new Partition Table msdos = MBR, create new partition filling up ALL of the space and then finally add the file MSI.ROM to the drive. Only the Flag lba needs to be set (without it doesn't work).

The issue was caused for me by two unallocated 6MB partitions... Gee, thanks Windows.
I have the exact same problem and seeing your post gave me new hope. Unfortunately after re partitioning and re formatting all 4 of my usb sticks, i still have no luck. I have one USB2 stick, 4GB (Verbatim), 3 USB3 Sticks from SanDisk 16, 32 GB and Kingston.

Do you have any other advice for me?
 
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