How to remove Thinkpad T420 Bios Password

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  • nazrul145
    Badcaps Veteran
    • Jan 2014
    • 333
    • BD

    #1

    How to remove Thinkpad T420 Bios Password

    Hi i need unlock a thinkpad t420 bios password. How to unlock it? or someone have this bios file?
  • andalusi
    Member
    • Apr 2014
    • 19
    • ALGERIA

    #2
    Re: How to remove Thinkpad T420 Bios Password

    Hi i need unlock a thinkpad t420 and t430 bios password.

    Comment

    • stevie
      Member
      • Apr 2010
      • 30

      #3
      Re: How to remove Thinkpad T420 Bios Password

      you need to reprogram the small atmel chip it has L08 on it
      actually full no is at24rf08

      Comment

      • cyberhack
        Badcaps Veteran
        • Feb 2013
        • 466
        • Uk

        #4
        Re: How to remove Thinkpad T420 Bios Password

        here read this
        http://sodoityourself.com/hacking-ib...bios-password/

        Comment

        • salawayon
          Badcaps Veteran
          • Nov 2012
          • 568
          • philippines

          #5
          Re: How to remove Thinkpad T420 Bios Password

          Anyone could share the bios file for thinkpad T420?

          Bios chip : MX25L6406E

          Thanks...

          Comment

          • masud
            Badcaps Veteran
            • Jul 2011
            • 317
            • Bangladesh

            #6
            Re: How to remove Thinkpad T420 Bios Password

            is there any easy way to remove the bios lock?

            Comment

            • khaahk
              Badcaps Veteran
              • Dec 2013
              • 754
              • Estonia

              #7
              Re: How to remove Thinkpad T420 Bios Password

              easy and relatively cheap:
              http://www.ja.axxs.net/buy.htm
              been using for a while

              Comment

              • Levi
                Senior Member
                • May 2014
                • 59
                • Ghana

                #8
                Re: How to remove Thinkpad T420 Bios Password

                Hi stevie, Pls can elaborate on how to use RT809F reprogram the at24rf08. will be very grateful if you could explain this.

                Comment

                • tanveer
                  Member
                  • Oct 2015
                  • 40
                  • India

                  #9
                  Re: How to remove Thinkpad T420 Bios Password

                  T420 bios working dump
                  Attached Files

                  Comment

                  • Maxpower3
                    Bad Veteran
                    • Feb 2018
                    • 1219
                    • France

                    #10
                    posibility to recover the Password in RF08 on T420

                    hello ,

                    is there a possibility to recover the Password in the chip RF08 on T420. I have a batch of 100 Pc, if I could find a solution to find the password.
                    Thanks

                    Comment

                    • RethoricalCheese
                      Badcaps Legend
                      • Mar 2013
                      • 1517
                      • Estonia

                      #11
                      Re: posibility to recover the Password in RF08 on T420

                      Arduino, thinkpadeepromreader.ino and IBMpass. I have done it before but I forgot what model it was. Last 3 times I tried, it did not work for some reason.

                      T420 has that eeprom on bottom side sadly. Takes a bit more time to use the shorting method.
                      Last edited by RethoricalCheese; 01-10-2020, 11:15 AM.

                      Comment

                      • Maxpower3
                        Bad Veteran
                        • Feb 2018
                        • 1219
                        • France

                        #12
                        Re: posibility to recover the Password in RF08 on T420

                        Originally posted by RethoricalCheese
                        Arduino, thinkpadeepromreader.ino and IBMpass. I have done it before but I forgot what model it was. Last 3 times I tried, it did not work for some reason.

                        T420 has that eeprom on bottom side sadly. Takes a bit more time to use the shorting method.
                        I have the dump but failed to decode
                        Attached Files

                        Comment

                        • msnessay
                          Senior Member
                          • Apr 2015
                          • 121
                          • GRANDY

                          #13
                          Re: posibility to recover the Password in RF08 on T420

                          Originally posted by Maxpower3
                          hello ,

                          is there a possibility to recover the Password in the chip RF08 on T420. I have a batch of 100 Pc, if I could find a solution to find the password.
                          Thanks
                          yesss bro

                          Comment

                          • smiley60
                            Member
                            • Jul 2021
                            • 43
                            • UAE

                            #14
                            Re: posibility to recover the Password in RF08 on T420

                            Originally posted by Maxpower3
                            hello ,

                            is there a possibility to recover the Password in the chip RF08 on T420. I have a batch of 100 Pc, if I could find a solution to find the password.
                            Thanks
                            Hi bro
                            did u find the way of password recovery in lenovo t420?

                            Comment

                            • Maxpower3
                              Bad Veteran
                              • Feb 2018
                              • 1219
                              • France

                              #15
                              Re: posibility to recover the Password in RF08 on T420

                              Originally posted by smiley60
                              Hi bro
                              did u find the way of password recovery in lenovo t420?
                              not find solution for that, password is crypted
                              Attached Files

                              Comment

                              • ghandisolutionlaptop
                                Senior Member
                                • Jul 2021
                                • 57
                                • INDI

                                #16
                                Re: How to remove Thinkpad T420 Bios Password

                                Send bios backup

                                Comment

                                • smiley60
                                  Member
                                  • Jul 2021
                                  • 43
                                  • UAE

                                  #17
                                  Re: posibility to recover the Password in RF08 on T420

                                  Originally posted by Maxpower3
                                  not find solution for that, password is crypted
                                  so reflash the bios or ec chip

                                  Comment

                                  • smiley60
                                    Member
                                    • Jul 2021
                                    • 43
                                    • UAE

                                    #18
                                    Re: How to remove Thinkpad T420 Bios Password

                                    I have a lenovo t440s with computrace problem
                                    anyone can help
                                    Attached Files

                                    Comment

                                    • shabi
                                      Banned
                                      • May 2019
                                      • 147
                                      • pakistan

                                      #19
                                      Re: How to remove Thinkpad T420 Bios Password

                                      Originally posted by smiley60
                                      I have a lenovo t440s with computrace problem
                                      anyone can help
                                      https://www.youtube.com/watch?v=hNvl8hsNy1s

                                      Comment

                                      • Maxpower3
                                        Bad Veteran
                                        • Feb 2018
                                        • 1219
                                        • France

                                        #20
                                        Re: How to remove Thinkpad T420 Bios Password

                                        Originally posted by smiley60
                                        I have a lenovo t440s with computrace problem
                                        anyone can help
                                        use autopatcher ,put password and patch

                                        Comment

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