Lenovo T14 - Reading MEC Chip

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  • coolshrimp
    Senior Member
    • Nov 2016
    • 54
    • Canada
    #1

    Lenovo T14 - Reading MEC Chip

    I have a Lenovo T14 I need to remove Bios password.

    I have the RT809H Programmer, i connected wires to JTAG but cannot read chip (MEC-1663).

    Iv attached diagram of how its wired up.
    I used diagram from another T14 model but the board is slightly different i cant find a diagram for my exact board.

    Did i wire this right?
    Does CLK go to TCK jtag point?
    Someone said I need 10K pull up resistor, what points do i connect that to?
    I don't see the missing resistor other point to my boards a bit different.

    I know you cant edit out the password but if you re-flash the dump it clears iv been told. (rt809h + read MEC1663 + write MEC1663) then you use the maintenance tool to restore serial etc.
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    • rediii
      h???, spurrrn
      • Mar 2018
      • 487
      • somewhere in europe
      #2
      Re: Lenovo T14 - Reading MEC Chip

      Originally posted by coolshrimp
      I have a Lenovo T14 I need to remove Bios password.

      I have the RT809H Programmer, i connected wires to JTAG but cannot read chip (MEC-1663).

      Iv attached diagram of how its wired up.
      I used diagram from another T14 model but the board is slightly different i cant find a diagram for my exact board.

      Did i wire this right?
      Does CLK go to TCK jtag point?
      Someone said I need 10K pull up resistor, what points do i connect that to?
      I don't see the missing resistor other point to my boards a bit different.

      I know you cant edit out the password but if you re-flash the dump it clears iv been told. (rt809h + read MEC1663 + write MEC1663) then you use the maintenance tool to restore serial etc.
      please follow this thread: https://www.badcaps.net/forum/showth...&highlight=mec

        Comment

        • coolshrimp
          Senior Member
          • Nov 2016
          • 54
          • Canada
          #3
          Re: Lenovo T14 - Reading MEC Chip

          Originally posted by rediii
          please follow this thread: https://www.badcaps.net/forum/showth...&highlight=mec
          Iv read thru that whole thread previously no info on my specific board.

            Comment

            • coolshrimp
              Senior Member
              • Nov 2016
              • 54
              • Canada
              #4
              Re: Lenovo T14 - Reading MEC Chip

              Solution: https://www.badcaps.net/forum/showthread.php?t=111439

                Comment

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