IBM Thinkpad R52 Password on SYSTEM

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  • lorins_core
    BlackSmith
    • Dec 2012
    • 551
    • Philippines

    #1

    IBM Thinkpad R52 Password on SYSTEM

    IBM Thinkpad R52 Password on SYSTEM
    even on Bios Setup can't Access Have Password

    User or Owner He do not Know the Password?


    I try to basic Troubleshoot. Dismantle Laptop Reset Cmos Bios using Remove the Cmos Battery also Discharge. No Luck

    i think need to Clean the Bin File.

    Here The Bin File




    Tia
    Attached Files
  • MJ-meo-dmt
    Senior Member
    • May 2016
    • 186
    • South Africa

    #2
    Re: IBM Thinkpad R52 Password on SYSTEM

    I think those have the Atmel chips there are usually two of them. Replace them both or the one closest to the BIOS region(circuit).
    The way to do it is remove all power from the board esp CMOS.
    Then replace the chips and then only start it with AC plugged in. Then check.
    while alive { live(toFullest=true) }

    Comment

    • SMDFlea
      Super Moderator
      • Jan 2018
      • 20701
      • UK

      #3
      Re: IBM Thinkpad R52 Password on SYSTEM

      The password is stored in a secure chip such as PC8394T-VJG , https://www.allservice.ro/forum//viewtopic.php?t=47

      https://www.badcaps.net/forum/showth...ghlight=pc8394
      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

      Comment

      • lorins_core
        BlackSmith
        • Dec 2012
        • 551
        • Philippines

        #4
        Re: IBM Thinkpad R52 Password on SYSTEM

        Originally posted by MJ-meo-dmt
        I think those have the Atmel chips there are usually two of them. Replace them both or the one closest to the BIOS region(circuit).
        The way to do it is remove all power from the board esp CMOS.
        Then replace the chips and then only start it with AC plugged in. Then check.
        Thank For You advice.

        But they have no Atmel? the only Eeprom Chip or Bios what i saw is Prod Code 24C64WP?

        It is a Same?

        Comment

        • SMDFlea
          Super Moderator
          • Jan 2018
          • 20701
          • UK

          #5
          Re: IBM Thinkpad R52 Password on SYSTEM

          Try these scl sda points .http://www.ja.axxs.net/r52.htm
          All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

          Comment

          • MJ-meo-dmt
            Senior Member
            • May 2016
            • 186
            • South Africa

            #6
            Re: IBM Thinkpad R52 Password on SYSTEM

            Uhmm. Are you sure? They aren't as big as the normal BIOS chips. They look more like the 8 leg/pin mosfet type.

            Otherwise try the other way what SMDFlea suggested

            EDIT: I see now that 24C64WP is the size that I'm referring to... Uhm even the schematic says there are Atmel chips x2.... Maybe they used those instead?
            Last edited by MJ-meo-dmt; 11-09-2018, 06:44 AM.
            while alive { live(toFullest=true) }

            Comment

            • lorins_core
              BlackSmith
              • Dec 2012
              • 551
              • Philippines

              #7
              Re: IBM Thinkpad R52 Password on SYSTEM

              Originally posted by SMDFlea
              Try these scl sda points .http://www.ja.axxs.net/r52.htm
              I have a Question. need to used KMX1 Device. RT908F can DO That?

              Comment

              • lorins_core
                BlackSmith
                • Dec 2012
                • 551
                • Philippines

                #8
                Re: IBM Thinkpad R52 Password on SYSTEM

                Originally posted by MJ-meo-dmt
                Uhmm. Are you sure? They aren't as big as the normal BIOS chips. They look more like the 8 leg/pin mosfet type.

                Otherwise try the other way what SMDFlea suggested

                EDIT: I see now that 24C64WP is the size that I'm referring to... Uhm even the schematic says there are Atmel chips x2.... Maybe they used those instead?
                Yes Sir i'm 101% Sure. wait I send The Image Later

                Comment

                • SMDFlea
                  Super Moderator
                  • Jan 2018
                  • 20701
                  • UK

                  #9
                  Re: IBM Thinkpad R52 Password on SYSTEM

                  Originally posted by lorins_core
                  I have a Question. need to used KMX1 Device. RT908F can DO That?
                  No you don`t need a KMX. With the 24RF08 or equivalent chip on some thinkpads you just need to short pin 5 and 6 together at the right time while booting up to remove the password. The R52 definitely uses the PC8394T ,and you can use any TTL device to read the chip ,using the scl,sda points. I made a
                  simple-i2cprog years ago, its easy to make.If the RT908F can read ttl try it.
                  To read the chip use R24RF08 reader and decode the password with IBMPass, if R24RF08 reader doesn`t work try the pc8394 tools
                  Attached Files
                  Last edited by SMDFlea; 11-10-2018, 02:00 AM.
                  All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                  Comment

                  • lorins_core
                    BlackSmith
                    • Dec 2012
                    • 551
                    • Philippines

                    #10
                    Re: IBM Thinkpad R52 Password on SYSTEM

                    Originally posted by SMDFlea
                    No you don`t need a KMX. With the 24RF08 or equivalent chip on some thinkpads you just need to short pin 5 and 6 together at the right time while booting up to remove the password. The R52 definitely uses the PC8394T ,and you can use any TTL device to read the chip ,using the scl,sda points. I made a
                    simple-i2cprog years ago, its easy to make.If the RT908F can read ttl try it.
                    To read the chip use R24RF08 reader and decode the password with IBMPass, if R24RF08 reader doesn`t work try the pc8394 tools
                    Thank For That Sir. well can you teach me the Procedure. i need to fix this Laptop.

                    Thank Again
                    Last edited by lorins_core; 11-25-2018, 06:19 AM.

                    Comment

                    • SMDFlea
                      Super Moderator
                      • Jan 2018
                      • 20701
                      • UK

                      #11
                      Re: IBM Thinkpad R52 Password on SYSTEM

                      What bios programmer/s do you have .
                      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                      Comment

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