I need help with an HP EliteBook 840 G8 BIOS repair.

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  • fadee23
    New Member
    • Dec 2023
    • 2
    • AlgĂ©rie
    #1

    I need help with an HP EliteBook 840 G8 BIOS repair.

    Hello,
    I need help with an HP EliteBook 840 G8 BIOS repair.

    During the removal process, I accidentally lost the original BIOS chip, and unfortunately I don't have a backup of the original dump.

    I found a clean 32 MB BIOS file from another HP laptop with the same motherboard model, but now I need to insert my laptop-specific information (DMI data) into this clean BIOS image before flashing it.

    The information I need to restore includes:
    • Serial Number (S/N)
    • Product Number / SKU
    • System Board CT Number
    • Feature Byte
    • Build ID
    • MAC Address... ETC
    I want to modify the clean BIOS file using HxD, but I don't know where exactly these DMI fields are located in the .bin file...

    Can someone guide me on how to manually locate and edit the DMI region (NVRAM region) inside the BIOS dump, or confirm the correct offsets for this model?

    Thank you.
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