HP 450 X8M build bios

[jasko_jacker]

Motherboard model X8M-6L bios S71
The motherboard starts but it is not possible to use the USB ports to install the operating system. I inserted an SSD with Win11 installed and using the restore function the USB ports are visible in the shell but if I start setup the system freezes. I noticed that there are two chips, both 16,328 KB, one is the bios and the other the ec. But from the size of the EC chip it is clear that it probably contains a copy of the bios. Probably due to different versions (it is likely that the bios and the ec must be of the same version, by reprogramming both chips, the system updates the bios taking it from the ec chip. I do not exclude that there may be hardware problems however I would like to rebuild the bios and I downloaded the file from the manufacturer's website (sp149824), however I was unable to decrypt the 16,871KB file S71_011900.bin using the methods I know (this was done by unpacking the exe) while if I create a recovery USB I see a file in the folder DEVFW named firmware.bin of 32.839.bin
There is a method to extract both bios and ec from the manufacturer's site.

[SMDFlea]

Methods to extract the bios are

[Guide] How to extract ready for programming dump from HP update executable file
https://www.badcaps.net/forum/troubl...-file?t=121948

The EC isnt something that can be extracted. As far as i know it would have to be be built,but not possible as you can`t generate the checksums.You can use the EC dump from another dump,and reset the bios to manufacturing mode.Post both of your backups,and please include the full laptop model number and serial as per the rules.

RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...ore-posting

[jasko_jacker]

Hi
I read the guides on the link but it seems to me that a similar situation is not reported. I attach the unzipped exe file of the manufacturer's bios. When I run the HpFirmwareUpdRec file the only possibility is to create a bootable USB.

[hoaca388]

Where is the serial number? Have you read the rules carefully ?

[jasko_jacker]

Yes, I think. the serial is 5CD1122J47

[hoaca388]

You must post a backup bios file and serial number, not a new file from HP.

[jasko_jacker]

I needed to know if it is possible to extract and decrypt this type of .bin file present in the bios on the manufacturer's website to reconstruct a new bios to configure and understand what type of extraction the application dedicated to the installation does which is not Insyde type.......

[jasko_jacker]

In theory, if we exclude the part that concerns the information on the card (DMI), everything else should be possible to create without the old bios as happens during the production and configuration phase.

[hoaca388]

In theory, if we exclude the part that concerns the information on the card (DMI), everything else should be possible to create without the old bios as happens during the production and configuration phase.

https://www.badcaps.net/forum/troubl...21#post1622421

[jasko_jacker]

https://www.badcaps.net/forum/troubl...21#post1622421

I'm sorry but the link you posted doesn't contain anything about what I asked for or I can't find it, can you tell me exactly where it is explained?