Hello,
I try to create a bios file from a bricked Acer. I extract the bios file and open with UEFITool but i only obtain error and i never see Bios Region etc.
Can someone help me to understand how i can extact the originals informations from the bricked bios and create a valid dump with the FD file from Acer please?
Thank you very much.
Thatās normal for an AMD firmware. AMDs propietary firmware is afaik by far not as goog understood as the structure of Intel firmware.
Try to find the same version stock firmware and compare static parts.
Hello,
Ok thanks. Do you have any idea to find which version is the actual ? Can i see this with an Hexa editor ?
For ācompare the static partsā, i have to use a specific software or Hexa too ?
Sorry for my newbie question but i really want to understand and doing this one by myself this time 
Thank you so much
Compare Āµcode age if different, search for known versions in stock bios, search same place in dump, or compare static parts until you get a hit.
I use HxD for comparing.
To be honest, iām not sure to understand all your advices but iāll try.
If I compare the original Bios with the dump, I only see differences and nothing consistent.
I will try to understand what āstatic partsā are and try to replace.
The goal is to recover information like the serial, the Windows key and add it to the original, right?
If I flash the direct bios, the .fd file from Acer, the PC should boot?
Hi,
I opened both files, original and dump, and tried to make a comparison.
I find similar parts but Iām stuck at the beginning. On the right, the dump has data that is totally different from the left but is this normal?
How do we define what is ānormalā and what is not?
Is there specific software or knowledge base that helps you know where to look?
THANKS
Begin from the end with the structured parts.
Compare to w known working dump.
Normally a stock bios has empty areas that might get filled, thereās normally maybe a āheaderā where some bytes are changed and then data added.
Otherwise you didnāt even mention type and bios version.
Ok. Iāll start at the end.
I found how to add the Windows key, thatās it 
For the Bios version, I donāt have the dump version, I canāt find the information.
Regarding the version I want to flash, I went directly to Acer and downloaded the latest available (1.25). Iāll add it to the post if ever.
I just see something very strange : My dump have a size (8192 ko) and the original FD file is about 9234ko ! How itās possible ? Thank again.
I noticed that the end of the FD file contains instructions regarding updates to certain parts etc.
Should I cut this part at the same offset as my dump in order to find the same size?
I find how to extract the bin from FD file . Ok, now , itās time to explore 
ZAS.rar (3.4 MB)
I try to do my best. Can you check if it seems to be ok please?
Thank you very much.
OriginalTest.rar (3.3 MB)
