ThinkCentre M81 4049 bios dump

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  • alindumitru46
    Badcaps Veteran
    • Aug 2015
    • 255
    • Romania
    #1

    ThinkCentre M81 4049 bios dump

    Machine type 5049
    Product ID: 5049BQ4
    Motherboard: Lenovo IS6XM REV1.0, FRU 03T8182
    Flash BIOS update - ThinkCentre M81, M91, M91p / ThinkStation E30 said 9hj958usa is the latest release of BIOS but I remember that the latest 3 word were AUS, not USA.
    Was donated but suffered some voltage drops after which he did not boot. Only 2 long beeps followed by a continuous string of 2 short beeps.
    In the end I tried to put several variants of bios dump found with a USB CH314A SPI programmer but nothing happens.
    I used AsProgrammer_2.0.3a, CH341A Programmer from 1.18 to 1.40 or flashrom.
    Strange things there... flashrom detects WINBOND W25Q64CV bios chip with the clamp pin 1 to pin 1 bios chip position, the other programs find the chip with the pin 1 to pin 8 position. I don't even know how to choose ...
    Each program variant needs a certain driver variant.
    Quite difficult to manage without having a full working version of bios.
    Thanks in advance
    Tags: None
    • alindumitru46
      Badcaps Veteran
      • Aug 2015
      • 255
      • Romania
      #2
      Re: ThinkCentre M81 4049 bios dump

      Update, I found screenshots:
      Attached Files

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