BIOS update wont complete - Dell Latitude 7420

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  • Julian Bailey
    Member
    • Sep 2024
    • 26
    • UK
    #1

    BIOS update wont complete - Dell Latitude 7420

    Hi all

    Anyone come across this issue where a BIOS flash will only part complete?

    It will update the system BIOS and Primary EC BIOS fine but fails to update the Intel TBT Retimer, Intel TBT Retimer 2 and ME Firmware.

    NVMe m.2 drive isnt detected in the BIOS, but you can get into the BIOS fine and it all works in there as intended.

    The drive works fine in another laptop.

    Link to a video I made of what its doing here: https://1drv.ms/v/c/70274ed59325811e...z5AtQ?e=24XkY7

    Any ideas on how to overcome this?

    Cheers
    Tags: None
    • Sephir0th
      Badcaps Legend
      • Oct 2020
      • 1262
      • Germany
      #2
      NVMe not detected and ME region update failed points to a Chipset issue. TBT firmware update failed points to a issue with the Thunderbolt related ICs. Strong rabbit hole alert...
      FairRepair on YouTube

        Comment

        • Julian Bailey
          Member
          • Sep 2024
          • 26
          • UK
          #3
          Originally posted by Sephir0th
          NVMe not detected and ME region update failed points to a Chipset issue. TBT firmware update failed points to a issue with the Thunderbolt related ICs. Strong rabbit hole alert...
          So motherboard isnt repairable I take it? Shame as the laptop is in as new condition.

          Cheers

            Comment

            • SMDFlea
              Super Moderator
              • Jan 2018
              • 20731
              • UK
              #4
              Originally posted by Julian Bailey

              So motherboard isnt repairable I take it? Shame as the laptop is in as new condition.

              Cheers
              Try fixing the bios.
              All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                Comment

                • Julian Bailey
                  Member
                  • Sep 2024
                  • 26
                  • UK
                  #5
                  Originally posted by SMDFlea

                  Try fixing the bios.
                  The BIOS file is the latest rcv file from Dell website, so not sure how else the BIOS can be fixed.

                  Cheers

                    Comment

                    • SMDFlea
                      Super Moderator
                      • Jan 2018
                      • 20731
                      • UK
                      #6
                      Originally posted by Julian Bailey

                      The BIOS file is the latest rcv file from Dell website, so not sure how else the BIOS can be fixed.

                      Cheers
                      It could very well be a chipset issue as Sepiroth said, but it`s worth having a look at the bios. The ME failing to update could possibly be due to the ME firmware being corrupt, making the install bork. Also the m.2 drive not being detected could possibly be due to the ME settings, flex/IO . Thunderbolt, again could be ME related. What`s the history of the laptop, has the bios been messed with before. Does the service tag in the bios screen match with the one on the base cover.
                      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                        Comment

                        • Julian Bailey
                          Member
                          • Sep 2024
                          • 26
                          • UK
                          #7
                          Originally posted by SMDFlea

                          It could very well be a chipset issue as Sepiroth said, but it`s worth having a look at the bios. The ME failing to update could possibly be due to the ME firmware being corrupt, making the install bork. Also the m.2 drive not being detected could possibly be due to the ME settings, flex/IO . Thunderbolt, again could be ME related. What`s the history of the laptop, has the bios been messed with before. Does the service tag in the bios screen match with the one on the base cover.
                          The laptop came in with an Admin password, so we updated the bios with a programmer to a bios with manufacturing mode activated.

                          This is when issues started and it took a few different BIOS files to get the laptop to boot again, so I do think it's a corrupt firmware some where. But how to force it to do the firmware update that it's failing on I don't know.

                          Maybe trying a newly programmed BIOS chip?

                          The only 2x BIIS files I can find for this model of motherboard is on Telegram BIOS Archive, so I have a feeling those files may be corrupt in some way?

                          Cheers

                            Comment

                            • SMDFlea
                              Super Moderator
                              • Jan 2018
                              • 20731
                              • UK
                              #8
                              Originally posted by Julian Bailey

                              The laptop came in with an Admin password, so we updated the bios with a programmer to a bios with manufacturing mode activated.
                              This is when issues started and it took a few different BIOS files to get the laptop to boot again, so I do think it's a corrupt firmware some where. But how to force it to do the firmware update that it's failing on I don't know.
                              Maybe trying a newly programmed BIOS chip?
                              The only 2x BIIS files I can find for this model of motherboard is on Telegram BIOS Archive, so I have a feeling those files may be corrupt in some way?
                              Cheers
                              Is the service tag 28SH0F3 ,you asked for a bios back in october 2024 - https://www.badcaps.net/forum/troubl...51#post3490151
                              All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                Comment

                                • Julian Bailey
                                  Member
                                  • Sep 2024
                                  • 26
                                  • UK
                                  #9
                                  Originally posted by SMDFlea

                                  Is the service tag 28SH0F3 ,you asked for a bios back in october 2024 - https://www.badcaps.net/forum/troubl...51#post3490151
                                  This is for a different laptop with ST: C91L2F3

                                  Cheera

                                    Comment

                                    • SMDFlea
                                      Super Moderator
                                      • Jan 2018
                                      • 20731
                                      • UK
                                      #10
                                      Originally posted by Julian Bailey

                                      This is for a different laptop with ST: C91L2F3
                                      Cheera
                                      ok.

                                      Originally posted by Julian Bailey

                                      The laptop came in with an Admin password, so we updated the bios with a programmer to a bios with manufacturing mode activated.

                                      This is when issues started and it took a few different BIOS files to get the laptop to boot again, so I do think it's a corrupt firmware some where.
                                      ​

                                      Right, so if you post your original bios backups, thunderbolt FW backup and service tag in the bios requests forum we`ll see what`s what.
                                      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                        Comment

                                        • Julian Bailey
                                          Member
                                          • Sep 2024
                                          • 26
                                          • UK
                                          #11
                                          Originally posted by SMDFlea

                                          ok.

                                          ​

                                          Right, so if you post your original bios backups, thunderbolt FW backup and service tag in the bios requests forum we`ll see what`s what.
                                          I did take a backup of the old BIOS but wasn't aware of the Thunderbolt FW? Is there a separate BIOS chip for that?

                                          Cheers

                                            Comment

                                            • SMDFlea
                                              Super Moderator
                                              • Jan 2018
                                              • 20731
                                              • UK
                                              #12
                                              Originally posted by Julian Bailey

                                              I did take a backup of the old BIOS but wasn't aware of the Thunderbolt FW? Is there a separate BIOS chip for that?

                                              Cheers
                                              Leave that for now and just post your bios backup
                                              All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                                Comment

                                                • SMDFlea
                                                  Super Moderator
                                                  • Jan 2018
                                                  • 20731
                                                  • UK
                                                  #13
                                                  Bios request moved -> https://www.badcaps.net/forum/troubl...pt-me-firmware
                                                  All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                                    Comment

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