!!! Warning: Z490 boards - problem with recent BIOS updates !!!

TuXEKR156d02de

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Well-written tutorial. Yes, the external programmer you used is quite expensive, but you can probably can sell it again with minimal losses.

One thing about identifying the BIOS chip: Look towards the bottom of the board first, a lot of times it will be located there. Whenever your board has a chip with 8 pins and "Winbond" written on it, you're lucky, it can only be the BIOS chip. But it's not always from Winbond. So another good hint: Most of the time, the pins will come from the two narrow sides of the chip, not the wide sides. The board will also have other 8-pin chips next to each fan connector, but with "Nuvoton" written on them and the pins coming from the wide sides of the chip. Anything from Nuvoton is usually related to fan control / voltage control and not the BIOS chip.



Yes, it would be good to discuss is between yourselves, and when you have it figured out, you can write a tutorial or so, if you want.
Gracias, lo acabo de agregar. Los invito a incluir este tutorial en el primer mensaje para que las personas que no tienen opción de reemplazo o reparación puedan hacer este flash y así poder recuperar su placa base.

IF YOU USE THE CH341a PROGRAMMER
!! IMPORTANT TO READ !!

On the "CH341a" comment that it has a design flaw and injects the chip with a voltage of 5v instead of the 3v that they generally need. This can generate an overcurrent on the chip, as the PDF indicates that any voltage above 4v will burn out the chip.
1634915103094.png


I leave you a video of how to solve it (it is only to make a bridge):
 
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ms15af02e9

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Date of Failure: 20-Oct-2021
Affected board model: MPG Z490 Tomahawk
CPU: i7-10600K
Memory: 32GB (2x 16GB) Crucial Ballistix DDR4-3200 CL16 Dual Kit
Flashing method used: M-flash
Updateed to BIOS version: Version 17 to 1A.
BIOS file: E7C80IMS.1A0
Result: Not booting without prior power disconnect
Overclocked: No
 

citay

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I made an image that shows the most likely BIOS chip location for most of the MSI Z490 boards.
During that, i noticed that the chip is always to the left of the bottom middle screw hole for the case screw. So that's probably the easiest way to find it.

Please try to verify that it is indeed a BIOS chip before attempting to flash.

BIOS chip location.jpg
 
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leighb98159402e0

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Oct 23, 2021
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Oh man not looking good fortunatly for me I upgraded my z490 gaming plus bios from a8 to a9 a week ago using flash in bios and it didn't brick it thank goodness, so now I am on a9 bios and msi have scrapped a9 from the motherboard site, now worried about changing from a9 bios☹ everything running smoothly on windows 11 gaming and all that, specs rtx 2070 super, motherboard^,3600 MHz ram 32gb kingstn dual channel, i910900k, lian LI 240 aio.
 

citay

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Once you flashed a new BIOS successfully as you did, you can stay on it no problem. It's only at the end of the update process where the problem can occur. They didn't pull the latest BIOS because of bugs in the BIOS itself, they pulled it because of this issue that can happen during the last stages of the flashing process. But for you, since it finished successfully, there's no further danger of anything happening. And hopefully for the next BIOS they put online, this issue can no longer occur.
 
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Installed latest BIOS 7C75v2B with Windows11 support for my MSI Z490 A-pro about a month ago without any issues....
Everything works stable so far so the BIOS itself doesn't seem to be problematic at all if you successfully update ot it

Why MSI doesn't have Windows 11 drivers for their boards in the download page??
 
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citay

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Well, Windows 11 only came out this month, and MSI always lag behind on their drivers. Your best bet is to download them directly from the manufacturers.

Realtek LAN: https://www.realtek.com/en/componen...0-1000m-gigabit-ethernet-pci-express-software
(Win11 Auto Installation Program)

Intel LAN (for higher-model boards): https://www.intel.com/content/www/u...el-network-adapter-driver-for-windows-10.html
(Wired driver x64) Says Win10, but will work for Win11 too.

Intel Graphics: https://www.intel.com/content/www/us/en/download/19344/intel-graphics-windows-dch-drivers.html

The other drivers should be ok to use from the MSI site.
 

lampkav153c02db

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hello i updated the bios on the motherboard:

MSI Z490 GAMING EDGE WIFI

after the update, it has the same symptoms as written in the post, the service to which I gave stated that the bios chip was damaged

The update was the newest for windows 11, I don't remember the exact version

I know that I will not buy MSI board anymore or update the bios to the latest version

Thanks to MSI for the traume :-)
Greetings from Poland
 

lampkav153c02db

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Date of failed flashing: 18:10:2021
Affected board model: MSI Z490 GAMING EDGE WIFI
CPU: I5 10400F
Flashing method used: Flash/USB - 32 GB
Attempted update to BIOS version: For Windows 11
Result: Stuck at EZ Debug LED "CPU" after update.
 

citay

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Awww man, you updated on October 10, and MSI pulled the latest BIOS updates for all Z490 boards from their website on October 11! What a bad timing. This is all from MSI reacting so late.

I know that I will not buy MSI board anymore or update the bios to the latest version
This kind of thing is very rare, and hopefully MSI will learn a lesson from it and do better testing before releasing updates. I know it doesn't happen every time someone updates their Z490 BIOS, but as soon as they had several RMAs for similar reasons, they should have noticed something. But it took them way too long to connect the dots.

If you get another board in the future, just make sure it has USB Flashback (Flash BIOS Button on MSI). Then you don't have to worry in the slightest about an update. Because you can always force-flash a different version, or force-flash the same version again until it works, even if the board doesn't want to boot. This function can be a life-saver. On Z490, only the most expensive MSI board models had it, on Z590 it's on almost every board, so MSI are learning. I think for Z690 it will also be on most boards again.
 
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I made an image that shows the BIOS chip location for most of the MSI Z490 boards.
During that, i noticed that the chip is always next to the bottom middle screw hole for the case screw. So that's probably the easiest way to find it.

View attachment 152958
correction
Z490 Gaming Carbon Wifi BIOS Chip is wrong here,
Thanx to Furna,
We found out I was trying to program the wrong chip based on what was showing here in forum.
The correct Chip is MACRONIX MX25L25673G as shown below
the bad news is that we can not use the clamp here to program it
 

citay

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Exactly this. I just updated this morning for Windows 11 compatibility and now my board is dead in the same way as everyone else in this thread. Why on earth would they leave the update there when they know its bricks boards.
Indeed, they didn't pull it for the Z490 Tomahawk for some reason... Also, i don't understand why they keep the two updates before that one online. We had the first reports about bricked Z490 boards in May, so the problem can occur with the last three updates, not just the "Windows 11" update. Maybe since MSI have realized so late that there's a problem, they think it's all from the latest BIOS update? But then why leave it online for the Z490 Tomahawk?

I would have understood if they kept it online for the Z490 UNIFY and ACE boards, as those can easily recover from a failed update. But it's gone for them too. The only high-end board they kept it online for is the Z490 GODLIKE (the model that sometimes tends to get bought by people with too much money and not enough technical knowledge)...

Can you post a reply with this form, filling out the rest?
Date of failed flashing: October 24, 2021
Affected board model: Z490 Tomahawk
CPU:
Flashing method used:
Attempted update to BIOS version: 7C80v1A
Result: Stuck at EZ Debug LED "CPU" after update.


correction
Z490 Gaming Carbon Wifi BIOS Chip is wrong here,
Thank you, i corrected the image! It's hard to find good enough photos of the PCB to be able to read the markings on the chip and do further research. So i just put my "best guess" for each chip, it is always a good idea to double-check everything. So far, only few people have attempted to flash it with an external programmer, so i think nobody else was confused by it. I have added a warning to double-check that it's the correct chip.
 

Furna

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the bad news is that we can not use the clamp here to program it
Use jumper wires to hook up to TPM (JTPM) check PIN out on the motherboard manual ... on CH341A the PINs are labeled on the back.
All in all it's just an SPI bus; based on the quality of the software used with the programmer you can also program a specific chip when there are multiple on the same bus
 

mel.norri127702aa

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Oct 7, 2021
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Use jumper wires to hook up to TPM (JTPM) check PIN out on the motherboard manual ... on CH341A the PINs are labeled on the back.
All in all it's just an SPI bus; based on the quality of the software used with the programmer you can also program a specific chip when there are multiple on the same bus
Furna, I was thinking the same thing, but I lack the experience of actually doing anything via the JTPM1 port. Could you provide us all with more details? In my case I have a Z490 Tomahawk and I've included how I think it should be connected to my Flashcat USB (see attached). I am not sure if SPI Reset is required or weather the motherboard will need to be powered during the flashing operation.

PS: In the diagram pins of the same color would be connected. The very light gray represents no connection at all.

UPDATE:
The JTPM1 port did not work for programming the chip, so I removed the attached diagram. Please see this post for the latest update.
 
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bennodx14ce02ca

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Nov 1, 2020
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Date of failed flashing: October 24, 2021
Affected board model: Z490 Tomahawk
CPU: Intel: i9 10900
Flashing method used: M-Flash
Attempted update to BIOS version: 7C80v1A
Result: Stuck at EZ Debug LED "CPU" after update.
 

Kederai

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Oct 22, 2021
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not flash the bios by M-Flash or LiveUpdate, if you want to flash the bios in the future, we can provide you a tool to update the bios.
You can download the tool from below link, this tool used in OS, it can be updated in OS by CMD instruction. Please unzip the bios file and bios tool, then put them to C: or D: disk, then run the CMD instruction to flash the bios, the flash instruction is AFUWINx64 E7C79IMS.1xx.

https://drive.google.com/file/d/1SmhM6ro7v8CdkTEbZtHHZwN6fF54vlmG/view?usp=sharing
 
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