Boards 12291-2 1
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5 files
  • w540 orig ec
    BIOS · 4.00 MB · 6 May 2025
    BIOS bin
    —
    ShareMan_Electronic_Files
    4.00 MB
  • w540 orig ec

    Original EC firmware for a W540 laptop, packed into a 2.76 MB RAR archive. The embedded controller handles power-on sequencing, battery charging, keyboard and fan…

    BIOS · 2.76 MB · 1 Aug 2022
    BIOS rar
    —
    SCHEMATICWORLD
    2.76 MB
  • MEC1633 W540 12291-2.bin

    EC firmware image in a ZIP of 108 KB for the Lenovo ThinkPad W540, meant for the MEC1633 embedded controller on board 12291-2, a Wistron-designed motherboard number.

    BIOS · 12291-2 · 108 KB · 1 Aug 2022
    BIOS zip
    12291-2
    SCHEMATICWORLD
    108 KB
  • LENOVO W540

    RAR archive of 3.14 MB for the Lenovo ThinkPad W540, with no board number, revision or content list given in the name.

    Archive · 3.14 MB · 1 Aug 2022
    Archive rar
    —
    SCHEMATICWORLD
    3.14 MB
  • w540 main

    Archive described only as the main firmware for a W540 laptop, 2.86 MB in RAR form. Main presumably means the primary BIOS image as opposed to the EC part, but the name…

    Archive · 2.86 MB · 1 Aug 2022
    Archive rar
    —
    SCHEMATICWORLD
    2.86 MB