Lenovo ThinkPad T14 Gen 2 ITL 5B21A24600 w i5-1135G7 - bios password erase

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  • majster-pl
    Majster
    • Sep 2025
    • 6
    • UK
    #1

    Lenovo ThinkPad T14 Gen 2 ITL 5B21A24600 w i5-1135G7 - bios password erase

    Hi everyone!

    I’m new here, so please forgive me if I make any mistakes!

    I’ve been given a laptop that’s stuck behind a BIOS password, and I can’t install any OS on it. I’ve identified two chips that seem to be related to the BIOS:
    • A small 256-kilobit chip: 24256E (picture attached)
    • A 1MB chip: Winbond 25080DVNIG (picture attached)

    I’ve successfully dumped both chips using a CH341 programmer, but I’ve hit a wall trying to find the password in either of the binary files. I have a feeling it might not be possible on this laptop, but I’m eager to try anything at this point.

    Any suggestions or guidance would be greatly appreciated!

    I’ve attached both .bin files in lenovo_org.zip along with a few pictures of the chips.

    Thanks in advance!


    Click image for larger version Name: mir_20250906_000451.jpg Views: 0 Size: 1.69 MB ID: 3719391 Click image for larger version Name: mir_20250905_170638.jpg Views: 0 Size: 1.72 MB ID: 3719392
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