Extracting a bios from lenovo bios update tool

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  • yorfax
    New Member
    • Jan 2017
    • 7
    • UK
    #1

    Extracting a bios from lenovo bios update tool

    Hello
    I have downloaded a BIOS update tool from the Lenovo site 9dcn34ww.exe when I opened it in 7zip I saw a file called ZIWB2304.ROM which I assumed was the bios file and it loads into UEFItool. The issue is the file size, it is 10,101,992 bytes whereas the dump file I downloaded from the motherboard is 8,388,608 bytes why is there a discrepancy? Also, if I used a plain .bin file from Lenovo would that automatically update the pertinent information from the laptop on first boot? (or does the bios update tool do this?).
    Thanks in advance
    Matthew
    Tags: None
    • yorfax
      New Member
      • Jan 2017
      • 7
      • UK
      #2
      Apologies, I should have made it clear, this is a Lenovo B50-70 80EU.

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