ASUS ROG GL552VW v2 - BIOS check/repair

[MotherTeresa]

Hello Could someone who knows about BIOS take a look at the attached dump. Laptop AUSU ROG GL552VW with nVidia N16P 4GB and i5 CPU.
I used to change GPU in the laptop, and it worked without problems for a few years. My 9-year-old daughter uses the equipment, yesterday it worked, today she says it won't start. I checked and it hangs on the ASUS logo, you can't enter BIOS (it worked once).
Disconnecting all peripherals, including the keyboard, resetting BIOS with jumpers under RAM, changing RAM does nothing, it still hangs on LOGO.
I installed a different BIOS from this model to test, and it works, starts normally without any problems, but I would like to keep the serial numbers, etc.
So I ask someone who is able to fix this BIOS for help.
I have the equipment and skills to repair hardware, including BGA, but I repair game consoles by default so I don't work with BIOS.

Thanks in advance and best regards.

[MotherTeresa]

The attached BIOS is the one I downloaded from the internet and after write it to FLASH it currently works in this laptop, but it has the wrong S/N and MAC address of the LAN card. I read it from the laptop again.

Correct S/N: GAN0CV20V60243D - in my bad BIOS file at offset 0x260000h
Correct MAC is 70:4D:7B:B9:9B:78 - in my bad BIOS file at offset 0x2601D7

[Ponto da Manutenção]

You still need to share the serial number of the equipment.

Below is the file based on the model provided by you.

[MotherTeresa]

Sticker

[Ponto da Manutenção]

You must describe the information...

[MotherTeresa]

The attached BIOS is the one I downloaded from the internet and after write it to FLASH it currently works in this laptop, but it has the wrong S/N and MAC address of the LAN card. I read it from the laptop again.

Correct S/N: GAN0CV20V60243D - in my bad BIOS file at offset 0x260000h
Correct MAC is 70:4D:7B:B9:9B:78 - in my bad BIOS file at offset 0x2601D7

[MotherTeresa]

It's no longer valid, I figured it out myself - there are no checksums in the SN and MAC area, so I replaced it myself in the BIOS which I found earlier on the Internet.