Question Bricked bios, on mobo MG43M (Acer Veriton S80G), further to wrong version bios update

[JLV5628]

Good afternoon,
I updated this PC to Windows 10, 8 Gb Ram, SSD 500Go and all was perfect until i updated bios.
Seems i took the wrong version, and now i am stuck with a PC doing nothing except power light.

I got now the right bios (P01-B3) and bought a CH341A flash programmer with chip clip.

I think i have found the Bios chip (see picture and confirm i am right please), an SST25VF040B (hope there is only one on board)
https://drive.google.com/file/d/1Xqyk-eIYULqYUOKjf7rmzEgPk8Mzfjvx/view?usp=sharing

I now have following problem: the bios file i have is a .rom file which includes boot and bios itselt and may be more stuff,
and according to the CH341 software, it is bigger than chip size.

And this is where i need your help:

Either someone has a CH341 tool and can load and send me the correct file,
Or Someone knows how to extract what is needed from the .Rom file
Or Any other idea wich could work

By the way, i see that someone else had similar problem, but i am not allowed to watch it
https://www.google.fr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjI6KSwr9OEAxWAU6QEHeTDDPUQFnoECEgQAQ&url=https://forums.tomshardware.com/threads/help-with-reflashing-a-bricked-bios.3680296/&usg=AOvVaw15sb_XTVOGhCK49WVGs1Bs&opi=89978449

Thanks in advance for your help, and my apologies for my English
Jean-Luc from France

 

[LinuxDevice]

I'm fascinated by your resourcefulness here. I can't answer your question, but I would think this guy might be who you ask next:
https://www.youtube.com/@rossmanngroup

There is a strong chance the chip is some proprietary customization, or that there is some sort of compression used, so on.

 

[JLV5628]

For those who have difficulties to find CH341A software and drivers on a clean site, i loaded and shared them there.
Feel free to download them.
https://drive.google.com/drive/folders/18R1GW__IRPFwNq2IkxQVxUnecJ9-FXZv?usp=sharing

 

[JLV5628]

If anyone of you guys has access to this thread, that i am not allowed to see, can you confirm to me the chip location in U18 ?
https://www.google.fr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjI6KSwr9OEAxWAU6QEHeTDDPUQFnoECEgQAQ&url=https://forums.tomshardware.com/threads/help-with-reflashing-a-bricked-bios.3680296/&usg=AOvVaw15sb_XTVOGhCK49WVGs1Bs&opi=89978449

Thanks for your help

 

[JLV5628]

Hi,
I can give you an update on this one, just finished solving the issue.

Here is what i did.
Acquired a CH31A external programmer with clip.
Downloaded CH341 software, in case you need i put it online here:
https://drive.google.com/drive/folders/18R1GW__IRPFwNq2IkxQVxUnecJ9-FXZv?usp=drive_link
Then on another MG43A V1.1 I downloaded the correct bios with CH341A and saved it
Then i connected the clip on the bricked bios mobo and loaded it (See further down procedure)
FYI on this mobo there is a trap as there are 2 Flashroms on it. The bios is U31 next to sata connectors.
Re-installed newly flashed mobo in PC powered up, all OK
This is the proof by example that a bricked bios on mobo can be fixed, even without "magic" button, without removing card from PC

To help future users of this post, here is the clear detailed procedure to do it:

1) Open CH341A software
2) Loadcorrect bios file with .bin extension
3) In software appropriate fields select eeprom type and brand
4) Connect the clip on the eeprom to be reloaded, matching pin one of clip with pin one of chip, Be careful the contacts on the clip slide up and in clip and are no longer in contact with chip pins , if that happens, push them back in from the side where ribbon cable is soldered on clip contacts, and make sure they reach the extremity of the clip.
5) Plug CH341A in any USB socket.
6) Click on "Détect" button of software to check that all contacts on clip are ok
All Eeprom fields have to be filled up after detect is pressed.
If not move the clip until this happens
7) Click on "Blank" and "Erase" buttons to clear the eeprom on mobo,
as programming button does not perform erase before programming and auto is the same.
8) Click on "Program" button, and wait until progression bar says 100% finished
9) Click on "Verify" button. If a message stating that content flashed is identical to .bin file loaded, you are done and your mobo is fixed. If message says thet contents are not identical go back to step 6, you clip has probably moved and contact is lost, and this until you get identical content. If you are careful and don't move clip it generally works first time
I would like to thank all people who helped me, and i will be happy to answer / help you if you have any questions or difficulties. (Hope my English is understandable)
Some pictures to illustrate what has been done (Windmill is dated 1744 and is still in operation and can be visited)

Sorry, unable to load images except using google drive,
If you want to see them here is the link on French forum where i could load images easily (2 pages)

Résolu - Recherche bios Acer Veriton S480G (Recharger le bios sans démonter la carte mère, suite à bios HS et écran noir)

Bonjour, J'ai récupéré pour une association un Acer Veriton S480G que j'ai dopé avec 8 Go de Ram et un SSD. Je l'ai passé à Windows 10 64 bits et tout fonctionnait parfaitement jusqu'à ce que je mette à jour le bios de la carte mère. Le bios n'est plus disponible sur le site Acer et du coup je...

forum.tomshardware.fr

PS: For admins of this site, a load image button giving access to drag and drop like in French forum is a real need, current method is a nightmare and obstructs real visibility of what has been done