Dell Latitude 7400 Bios Password

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  • DAHOUD
    Member
    • Sep 2023
    • 33
    • Tanzania

    #441
    Re: Dell Latitude 7400 Bios Password

    I have dell latitude 7400 LA-G871P display with errors TPM IS NOT DETECTED
    help me to solve this
    Attached Files

    Comment

    • SMDFlea
      Super Moderator
      • Jan 2018
      • 21457
      • UK

      #442
      Re: Dell Latitude 7400 Bios Password

      Originally posted by DAHOUD
      I have dell latitude 7400 LA-G871P display with errors TPM IS NOT DETECTED
      help me to solve this
      Post the service tag !

      RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
      https://www.badcaps.net/forum/showthread.php?t=103570

      .
      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

      Comment

      • DAHOUD
        Member
        • Sep 2023
        • 33
        • Tanzania

        #443
        Re: Dell Latitude 7400 Bios Password

        Its service tag is F99QK13 sir

        Comment

        • hoaca388
          Badcaps
          • Jan 2022
          • 12113
          • Socialist Republic of Vietnam

          #444
          Re: Dell Latitude 7400 Bios Password

          Originally posted by DAHOUD
          Its service tag is F99QK13 sir
          Latitude 7400
          Service Tag: F99QK13
          Attached Files
          ↵

          Any donations to badcaps are welcome, click this link to donate . Thanks to all the supporters
          ​https://www.badcaps.net/donate

          Comment

          • DAHOUD
            Member
            • Sep 2023
            • 33
            • Tanzania

            #445
            Re: Dell Latitude 7400 Bios Password

            Worked well message has disappeared thank you very much welcome Tanzania

            Comment

            • aung khine
              Member
              • Feb 2016
              • 17
              • myanmar

              #446
              Re: Dell Latitude 7400 Bios Password

              Hi,

              I also have 8fc8 password protected laptop.

              Please unlock my BIOS files
              EDC40 LA-G871P

              8FC8
              Attached Files

              Comment

              • volinakis
                Badcaps Legend
                • Jan 2021
                • 2805
                • N/A

                #447
                Re: Dell Latitude 7400 Bios Password

                Originally posted by aung khine
                Hi,

                I also have 8fc8 password protected laptop.

                Please unlock my BIOS files
                EDC40 LA-G871P

                8FC8
                service tag?
                ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
                https://www.badcaps.net/donate/
                ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

                Comment

                • aung khine
                  Member
                  • Feb 2016
                  • 17
                  • myanmar

                  #448
                  Re: Dell Latitude 7400 Bios Password

                  Service Tag : 8S3NP13

                  (Sorry for missing in request)

                  Comment

                  • mandrake87
                    Senior Member
                    • Jun 2022
                    • 70
                    • argentina

                    #449
                    Re: Dell Latitude 7400 Bios Password

                    Originally posted by aung khine
                    Service Tag : 8S3NP13

                    (Sorry for missing in request)
                    1st boot, press F2, write service tag, disable Absolute, save, restart. 2nd boot press Alt+F to exit manufacturing mode.
                    Attached Files

                    Comment

                    • aung khine
                      Member
                      • Feb 2016
                      • 17
                      • myanmar

                      #450
                      Re: Dell Latitude 7400 Bios Password

                      Originally posted by mandrake87
                      1st boot, press F2, write service tag, disable Absolute, save, restart. 2nd boot press Alt+F to exit manufacturing mode.
                      It works! After replacing the bin file as you instructed, laptop is now perfectly fine.
                      Thanks a lot for helping me out.

                      Comment

                      • LeonCass78
                        New Member
                        • Oct 2022
                        • 9
                        • Hampshire

                        #451
                        Re: Dell Latitude 7400 Bios Password

                        Dell Lattitude 7400
                        Service Tag: BDSB733
                        System number: BDSB733-8FC8

                        I have read the Windond W25Q80DV/DL chip and bin file attached.

                        I have tried the Lenovo autopatcher from here but it just errors

                        Can anyone help remove the password or point me to how
                        Attached Files

                        Comment

                        • SMDFlea
                          Super Moderator
                          • Jan 2018
                          • 21457
                          • UK

                          #452
                          Re: Dell Latitude 7400 Bios Password

                          Originally posted by LeonCass78
                          Dell Lattitude 7400
                          Service Tag: BDSB733
                          System number: BDSB733-8FC8

                          I have read the Windond W25Q80DV/DL chip and bin file attached.

                          I have tried the Lenovo autopatcher from here but it just errors

                          Can anyone help remove the password or point me to how
                          W25Q80DV/DL (8M-bit). 8 Mega bits = 1MB Mega Bytes .Wrong chip.

                          The Lenovo autopatcher will not work with a dell,not now,not ever.

                          .
                          Last edited by SMDFlea; 10-13-2023, 06:42 AM.
                          All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                          Comment

                          • LeonCass78
                            New Member
                            • Oct 2022
                            • 9
                            • Hampshire

                            #453
                            Re: Dell Latitude 7400 Bios Password

                            For clarity. Sorry mixing jobs, I naturally havent tried the lenovo autopatcher on this laptops bios.

                            I don't see any other Bios chips on this laptop, will take another look

                            Comment

                            • SMDFlea
                              Super Moderator
                              • Jan 2018
                              • 21457
                              • UK

                              #454
                              Re: Dell Latitude 7400 Bios Password

                              Originally posted by LeonCass78
                              For clarity. Sorry mixing jobs, I naturally havent tried the lenovo autopatcher on this laptops bios.

                              I don't see any other Bios chips on this laptop, will take another look
                              If you read some of the other posts in this thread you will get some clues

                              https://www.badcaps.net/forum/showpo...&postcount=423

                              .
                              All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                              Comment

                              • LeonCass78
                                New Member
                                • Oct 2022
                                • 9
                                • Hampshire

                                #455
                                Re: Dell Latitude 7400 Bios Password

                                Think I have found it
                                Attached Files

                                Comment

                                • SMDFlea
                                  Super Moderator
                                  • Jan 2018
                                  • 21457
                                  • UK

                                  #456
                                  Re: Dell Latitude 7400 Bios Password

                                  Originally posted by LeonCass78
                                  Think I have found it
                                  You havn`t made a good backup,it is only 5KB compressed.

                                  BIOS guides, methods, resources and tools
                                  https://www.badcaps.net/forum/showthread.php?t=103526
                                  1. How to dump and flash
                                  https://www.badcaps.net/forum/showpo...40&postcount=2

                                  Originally posted by piernov
                                  When flashing a BIOS always make a backup first. Take 2 or 3 different dumps and make sure they are identical.
                                  On Windows, you can use the command "fc /b" to check if two dumps are identical.
                                  Make sure that the dumps looks good, i.e. not filled with 0x00 or 0xFF. After compression, if the file has a size of only a few kilobytes, the EEPROM was most likely not read properly.

                                  Additionally, please read the FAQ at: https://www.badcaps.net/forum/showthread.php?t=98665
                                  .
                                  All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                  Comment

                                  • volinakis
                                    Badcaps Legend
                                    • Jan 2021
                                    • 2805
                                    • N/A

                                    #457
                                    Re: Dell Latitude 7400 Bios Password

                                    Originally posted by LeonCass78
                                    Think I have found it
                                    nope, try the one marked with red square.
                                    Attached Files
                                    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                    https://www.badcaps.net/donate/
                                    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

                                    Comment

                                    • LeonCass78
                                      New Member
                                      • Oct 2022
                                      • 9
                                      • Hampshire

                                      #458
                                      Re: Dell Latitude 7400 Bios Password

                                      not present on my board.

                                      Comment

                                      • SMDFlea
                                        Super Moderator
                                        • Jan 2018
                                        • 21457
                                        • UK

                                        #459
                                        Re: Dell Latitude 7400 Bios Password

                                        Originally posted by volinakis
                                        nope, try the one marked with red square.
                                        You`re right it was the wrong chip,its the thunderbolt firmware,no wonder it compressed so much.I expected UC5 or UC6 would have been posted.

                                        .
                                        All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                        Comment

                                        • LeonCass78
                                          New Member
                                          • Oct 2022
                                          • 9
                                          • Hampshire

                                          #460
                                          Re: Dell Latitude 7400 Bios Password

                                          so are we saying it cannot be done ?

                                          Comment

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