Help with bios update

[ciruiostar]

I tried to get the updated version of my motherboard's BIOS, but when I tried to flash it with Afudos it did not allow me to boot the computer and the following message appeared:



Boot block compatible versión ver 003

Bad bios checksum. Starting Bios Recovery.


I got that error when trying all the existing bios dumps on the page with serial numbers of a model similar to my motherboard and one of them the most updated one from another site exactly the same problem I don't think all the dumps are corrupt.

P5GC-TVM/S Original 
P5GC-TVM 
P5GC-TVM/SE 
P5GC-TVM SE/S 

Those are the model serial numbers of the motherboards whose variation between them is the number of SATA ports and the absence or presence of certain extra elements, but they are essentially the same motherboard.

I really don't know what I'm doing wrong. I left the original BIOS and the one I tried to flash.

Original bios:


  AmericanMegatrendsInc.-0302.rom (Size: 512 KB / Downloads: 0)

Bios flashed:


  P5GC-TVM-TWPC-0801.ROM (Size: 512 KB / Downloads: 0)