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Lenovo Thinkpad T495 AMD bios password locked

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    Lenovo Thinkpad T495 AMD bios password locked

    Hello, i need help for unlocking this Thinkpad T495 SN; PF-1YX1VY try autopatch but it's stay black screen,
    Attached Files

    #2
    Originally posted by lashamafia View Post
    Hello, i need help for unlocking this Thinkpad T495 SN; PF-1YX1VY try autopatch but it's stay black screen,

    try for test
    at restart : enter Bios setup with F1 and need clear security chip
    type password blank and load by default and save

    restore original Bios after...
    Attached Files

    Comment


    • lashamafia
      lashamafia commented
      Editing a comment
      not working,

    #3
    no boot, black screen or music ??

    Comment


    • lashamafia
      lashamafia commented
      Editing a comment
      fan restart every 2 seconds and keyboard light also, on my patched bios music play but stay black screen

    #4
    Originally posted by lashamafia View Post
    Hello, i need help for unlocking this Thinkpad T495 SN; PF-1YX1VY try autopatch but it's stay black screen,
    try this, follow instruction from autopatcher
    Attached Files
    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
    Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests
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    • lashamafia
      lashamafia commented
      Editing a comment
      Not worked, i try now to flash bios backup and now it's have same problem not turning on fan restart and keyboard light also restarting, checked soldering it's okay what maybe problem ?

    #5
    It means you read bios chipset with errors, that's why Maxpower3's file didn't work, he's very good in modifying bios in a proper and working way. That's why is better to read Bios guides made by masters of this forum before doing modifications of the bios, they recommend to read bios chipset 2-3 times and compare results, if they are the same it means you got a proper bios dump.
    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
    Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests
    all donations are welcome,
    see the donate button at the bottom of the page, or
    >>>>>
    click on this link to donate via PayPal. <<<<<
    Every donation made will go towards server fees and maintenance costs.
    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

    Comment


    • lashamafia
      lashamafia commented
      Editing a comment
      Backup file is good i flashed it before an laptop was started, but now when i flash it it's not booting,

    #6
    startup can take a long time, sometimes several startup cycles before the light

    Comment


      #7
      and if chipset is MX25L128 replace it with another one, i.e W25Q128, I had many troubles with this kind of chipset after erased 3 times.
      ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
      Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests
      all donations are welcome,
      see the donate button at the bottom of the page, or
      >>>>>
      click on this link to donate via PayPal. <<<<<
      Every donation made will go towards server fees and maintenance costs.
      ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

      Comment


      • lashamafia
        lashamafia commented
        Editing a comment
        Replaced bios chip and now it's working, thanks for your reply,

      #8
      good news but be more explicit: is patched file working?
      ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
      Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests
      all donations are welcome,
      see the donate button at the bottom of the page, or
      >>>>>
      click on this link to donate via PayPal. <<<<<
      Every donation made will go towards server fees and maintenance costs.
      ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

      Comment


      #9
      Hi everyone,

      I have a Thinkpad T495 (AMD Ryzen).
      I tried to disable the BIOS supervisor password and Computrace, but I failed.
      Can you please help me?

      What I did so far:
      I tried the autopatcher but wasn't able to succeed (black screen, beep sounds, fan spin, but no boot).
      I flashed back the original BIOS: system works, but supervisor password is still active.

      I attached the dump of the original BIOS (verified by reading it multiple times)

      Model: 20NK (20NKS53V00)
      Serial number: PF25PGKQ
      BIOS version: R12ET62W1.32

      It would be great if anyone could help me.
      Thank you :-)

      Attached Files

      Comment


      #10
      Originally posted by libertad_carajo View Post

      It would be great if anyone could help me.
      Thank you :-)
      ๐Ÿ“–โคต

      Boot the machine
      Press ENTER/F1/etc. to enter BIOS settings
      Enter any character when asked for Supervisor Password
      Press enter when it shows Hardware ID
      Press space bar 2x when asked
      Turn off machine
      Restore original BIOS
      Reset BIOS settings to factory default
      Attached Files
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      Thanks to all supporters.โ€‹
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      Doctrina est fructus dulcis, radicis amarae.
      .

      Comment


        #11
        Awesome, it worked like a charm! Thank you so much for your help!

        If you don't mind sharing your knowledge: How did you create this BIOS? I would like to learn.

        Comment

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