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    Lenovo b5400

    Please i need kbc file for program io on motherboard da0bm5mb8d0 rev lenovo b5400

    #2
    Re: Lenovo b5400

    What is the serial number, or model type .
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      #3
      Re: Lenovo b5400

      Originally posted by SMDFlea View Post
      What is the serial number, or model type .
      Thank you for answer

      Lenovo B5400_Quanta BM5_U45
      MB number : DA0BM5MB8D0
      Last edited by laptopcenter; 05-14-2019, 04:05 PM. Reason: correct

      Comment


        #4
        Re: Lenovo b5400

        Originally posted by laptopcenter View Post
        Thank you for answer

        Lenovo B5400_Quanta BM5_U45
        MB number : DA0BM5MB8D0
        What is the machine type,or serial number (Type: 20278 ???)

        Post your bios backup .
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          #5
          Re: Lenovo b5400

          Bios + EC .


          DMI
          W 6AFF5E
          M 40122F
          M 401013
          SN 40101A
          Attached Files
          All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

          Comment


            #6
            Re: Lenovo b5400

            Originally posted by SMDFlea View Post
            Bios + EC .


            DMI
            W 6AFF5E
            M 40122F
            M 401013
            SN 40101A
            thanks i will try test it and tell you ..

            Comment


              #7
              Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

              Hi, i have a Lenovo B5400 with locked bios (supervisor password) and seems that Auto-Patcher doesn't work with it.
              I tried to flash patched bios, and it boots up because i receive the screen "press any key, press two times space bar, etc.. and the final screen "turn off machine", but when i reflash stock dumped bios, the lock is always here.
              Any ideas??
              Here my Serial Number: QB08704354
              In attachment dumped and patched bios files.
              Attached Files

              Comment


                #8
                Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                Originally posted by fefo1993 View Post
                Hi, i have a Lenovo B5400 with locked bios (supervisor password) and seems that Auto-Patcher doesn't work with it.
                I tried to flash patched bios, and it boots up because i receive the screen "press any key, press two times space bar, etc.. and the final screen "turn off machine", but when i reflash stock dumped bios, the lock is always here.
                Any ideas??
                Here my Serial Number: QB08704354
                In attachment dumped and patched bios files.
                try clean this
                Attached Files

                Comment


                  #9
                  Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                  Originally posted by Maxpower3 View Post
                  try clean this
                  i see inside dumped and patched bios, but i don't have this value like your screen, i have "empty" values (all "FF")

                  Comment


                    #10
                    Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                    Originally posted by fefo1993 View Post
                    i see inside dumped and patched bios, but i don't have this value like your screen, i have "empty" values (all "FF")
                    yet I find good in both dumps

                    try test unlock

                    EDIT : I forgot 2 values, I modified , test both unlock
                    B8 B8
                    Attached Files
                    Last edited by Maxpower3; 11-17-2023, 08:44 AM.

                    Comment


                      #11
                      Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                      Originally posted by Maxpower3 View Post
                      yet I find good in both dumps

                      try test unlock
                      ah ok, now i find it also in my files! so now i clear this 4 lines and will try to dump and check if it works.
                      can you give me the name of the tool that i can see on the left side of your first screenshot? thanks

                      Comment


                        #12
                        Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                        Originally posted by fefo1993 View Post
                        can you give me the name of the tool? thanks
                        UEFITools

                        Comment


                          #13
                          Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                          Originally posted by Maxpower3 View Post
                          yet I find good in both dumps

                          try test unlock

                          EDIT : I forgot 2 values, I modified , test both unlock
                          B8 B8
                          if you have error bad SVP data, change the end put back the 8B C5 04 41, remove only the 3 lines from the beginning

                          look pics for compare with clean by setup
                          Attached Files

                          Comment


                            #14
                            Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                            Originally posted by Maxpower3 View Post
                            if you have error bad SVP data, change the end put back the 8B C5 04 41, remove only the 3 lines from the beginning

                            look pics for compare with clean by setup
                            i have exactly "SVP" error...but deleting the first three lines, now i have black screen and no boot or sound.
                            Attached Files

                            Comment


                              #15
                              Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                              Originally posted by fefo1993 View Post
                              i have exactly "SVP" error...
                              do you have access when SVP error or power off direct?
                              try another maybe

                              edit:
                              otherwise we can try a jump here, if no one has any other solution.
                              After bypass you will have to enter a new password or otherwise blank with entry.
                              the checksum will thus be corrected, you can leave bypass or remove with a new read and restore the modification

                              Originally posted by fefo1993 View Post
                              but deleting the first three lines
                              00 isn't FF

                              Multi edit We should continue here, https://www.badcaps.net/forum/showth...t=Lenovo+B5400
                              I hadn't seen that they talked about EC for this model. We are in the right place given the SVP error, must have a mirror map in the KBC maybe.
                              a moderator can move the thread perhaps ??
                              Attached Files
                              Last edited by Maxpower3; 11-17-2023, 02:02 PM.

                              Comment


                                #16
                                Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                                in the SMDFlea files it's like this
                                https://www.badcaps.net/forum/showpo...32&postcount=5
                                Attached Files

                                Comment


                                  #17
                                  Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                                  Originally posted by Maxpower3 View Post
                                  do you have access when SVP error or power off direct?
                                  try another maybe

                                  edit:
                                  otherwise we can try a jump here, if no one has any other solution.
                                  After bypass you will have to enter a new password or otherwise blank with entry.
                                  the checksum will thus be corrected, you can leave bypass or remove with a new read and restore the modification



                                  00 isn't FF

                                  Multi edit We should continue here, https://www.badcaps.net/forum/showth...t=Lenovo+B5400
                                  I hadn't seen that they talked about EC for this model. We are in the right place given the SVP error, must have a mirror map in the KBC maybe.
                                  a moderator can move the thread perhaps ??
                                  "test3" file in the rar WORKS! so now i have no password and unlocked bios! thanks!!

                                  Comment


                                    #18
                                    Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal

                                    Originally posted by fefo1993 View Post
                                    "test3" file in the rar WORKS! so now i have no password and unlocked bios! thanks!!
                                    no point doing the KBC then
                                    Last edited by Maxpower3; 11-17-2023, 04:21 PM.

                                    Comment


                                      #19
                                      need bios file
                                      model : 20278
                                      sn qb07812057

                                      Comment


                                        #20
                                        post full name and model, motherboard model,etc.



                                        post the contents of the bios chip even if it is corrupted..
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