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How to remove Thinkpad T420 Bios Password

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    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?

    #2
    Re: How to remove Thinkpad T420 Bios Password

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

    Comment


      #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


        #4
        Re: How to remove Thinkpad T420 Bios Password

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

        Comment


          #5
          Re: How to remove Thinkpad T420 Bios Password

          Anyone could share the bios file for thinkpad T420?

          Bios chip : MX25L6406E

          Thanks...

          Comment


            #6
            Re: How to remove Thinkpad T420 Bios Password

            is there any easy way to remove the bios lock?

            Comment


              #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


                #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


                  #9
                  Re: How to remove Thinkpad T420 Bios Password

                  T420 bios working dump
                  Attached Files

                  Comment


                    #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


                      #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


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

                        Originally posted by RethoricalCheese View Post
                        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


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

                          Originally posted by Maxpower3 View Post
                          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


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

                            Originally posted by Maxpower3 View Post
                            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


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

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

                              Comment


                                #16
                                Re: How to remove Thinkpad T420 Bios Password

                                Send bios backup

                                Comment


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

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

                                  Comment


                                    #18
                                    Re: How to remove Thinkpad T420 Bios Password

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

                                    Comment


                                      #19
                                      Re: How to remove Thinkpad T420 Bios Password

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

                                      Comment


                                        #20
                                        Re: How to remove Thinkpad T420 Bios Password

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

                                        Comment

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