Bios reset on Motherboard ADVANTRON EBC-EA01PSM

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  • banane
    New Member
    • Mar 2021
    • 6
    • Germany
    #1

    Bios reset on Motherboard ADVANTRON EBC-EA01PSM

    Hi everyone,

    I try to get rid of the power on / bios password on a small industry mainboard I found.

    It has "EBC-EA01PSM Rev.A101-2" printed on.

    The internet tells me it was sold on aliexpress for a while ???

    Removing the bios battery gives me at least the following information on top:
    American Megatrends Version 2.15.1226.

    Any ideas what to flash on it to make the pw dissapear? I already took a dump of the bios.

    Thanks
    Banane
    Attached Files
    Last edited by banane; 04-02-2022, 02:05 PM.
    Tags: None
    • banane
      New Member
      • Mar 2021
      • 6
      • Germany
      #2
      Re: Bios reset on Motherboard ADVANTRON EBC-EA01PSM

      Opening the dump with UEFITool I found a NVAR entry called "OEMDEFAULTPWDSetup".

      How can I edit this entry ?

      Fixed: Yes
      Base: 638h
      Header address: FFC00638h
      Data address: FFC00656h
      Offset: 5F0h
      Variable GUID: F2403E02-AE55-40F4-ABD9-E21EC2E8E8FD
      GUID index: 8
      Full size: 1Fh (31)
      Header size: 1Eh (30)
      Body size: 1h (1)
      Attributes: 83h (Runtime, AsciiName, Valid)
      Last edited by banane; 04-02-2022, 03:24 PM.

        Comment

        • banane
          New Member
          • Mar 2021
          • 6
          • Germany
          #3
          Re: Bios reset on Motherboard ADVANTRON EBC-EA01PSM

          Tried to clear all the NVRAM with 00h, did not help.

            Comment

            • banane
              New Member
              • Mar 2021
              • 6
              • Germany
              #4
              Re: Bios reset on Motherboard ADVANTRON EBC-EA01PSM

              I can't believe it, I found the password via AMITSEDecrypt.py, see https://www.badcaps.net/forum/showth...etup+Decryptor.

              I think the Advantech AIMB-224 is the same, by the way.

              @EineWildeStehlampe, vielen, vielen Dank :-)
              Last edited by banane; 04-03-2022, 09:57 AM.

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