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HP BIOS unlock tool

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    Re: HP BIOS unlock tool

    It's somewhat dangerous "knowledge" because I don't know too much about it aswell and it easily bricks the laptop when not used correctly. Just happened to figure out the somewhat correct area to look at. Needs some testing and fine tuning.

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      Re: HP BIOS unlock tool

      Originally posted by RethoricalCheese View Post
      It's somewhat dangerous "knowledge" because I don't know too much about it aswell and it easily bricks the laptop when not used correctly. Just happened to figure out the somewhat correct area to look at. Needs some testing and fine tuning.
      a relationship with Interrupt Vector Table ?
      Last edited by Maxpower3; 08-06-2021, 08:03 AM.

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        Re: HP BIOS unlock tool

        Hi @RethoricalCheese, could you please provide the Python script? I do not use Windows therefore my eyes bleed when I see "exe" file
        I could probably decompile the exe by myself, but thought that asking is always a simpler solution

        Comment


          Re: HP BIOS unlock tool

          Cannot edit my previous post - in case anyone looking for python script, here it is:
          Code:
          # decompyle3 version 3.7.5
          # Python bytecode 3.7 (3394)
          # Decompiled from: Python 3.7.11 (default, Jul 22 2021, 15:59:35) 
          # [GCC 8.3.0]
          # Embedded file name: HPUnlocker.py
          import mmap, shutil, sys
          path = sys.argv[1]
          splitpath = path.split('.')
          newpath = splitpath[0] + '_unlocked.' + splitpath[1]
          shutil.copyfile(path, newpath)
          loc_old = 0
          word = b'U\x00s\x00e\x00r\x00C\x00r\x00e\x00d'
          oldword = b'$VSS'
          oldword_key = b'B\x00i\x00o\x00s\x00U\x00s\x00e\x00r'
          oldword_end = b'\xaaU'
          with open(newpath, 'r+') as f:
            with mmap.mmap(f.fileno(), 0) as m:
              m.seek(0)
              loc = m.find(oldword)
              if loc == -1:
                print('new bios mod')
                m.seek(0)
                loc = m.find(word)
                for j in range(0, 100):
                  if j > 9 and j < 14:
                    m[loc + 16 + j:loc + 17 + j] = b'\xff'
                  else:
                    m[loc + 16 + j:loc + 17 + j] = b'\x00'
          
              else:
                print('old bios mod')
                while True:
                  loc_start = m.find(oldword_key, loc_old + 2)
                  loc_len = m.find(oldword_end, loc_start) - loc_start - 22
                  print(loc_start)
                  if loc_start == -1:
                    break
                  else:
                    for i in range(0, loc_len):
                      m[loc_start + 22 + i:loc_start + 23 + i] = b'\xff'
          
                    loc_old = loc_start
          
              m.flush()
              m.seek(0)
              f.seek(0)
          # okay decompiling HPUnlocker.pyc

          Comment


            Re: HP BIOS unlock tool

            Originally posted by Vesko356 View Post
            You're welcome, thanks for your feedback.



            Just another update. That message seems to only have appeared on one of machines, but not the other. It only appeared on the 1st bin in the rar file but not the other. I'm not sure why as I use the same message to flash them but regardless, it works for me so thank you again.

            Comment


              Re: HP BIOS unlock tool

              @RethoricalCheese hi... master ...they will likely never see this error ... black screen, key blink (caps lock)...
              old lady hp4530s ... i need help (I can't attach a file) new user limited english

              Comment


                Re: HP BIOS unlock tool

                Hi all,

                I am trying to remove the BIOS password for my Elitebook 850 G4. Tried the unlocker tool here and (did a bin file comparison) the only thing changed was the AdminPW section.

                Also tried to replace the BIOS section in the original dump, but then the PC won't start. The fan is blowing hard but nothing displayed on the screen,

                Could anyone help me remove the password in the attached BIOS dump? 850 G4 is pretty new and I can't find any success feedback here. Thanks a lot everyone!
                Attached Files

                Comment


                  Re: HP BIOS unlock tool

                  Originally posted by lengygf View Post
                  Hi all,

                  I am trying to remove the BIOS password for my Elitebook 850 G4. Tried the unlocker tool here and (did a bin file comparison) the only thing changed was the AdminPW section.

                  Also tried to replace the BIOS section in the original dump, but then the PC won't start. The fan is blowing hard but nothing displayed on the screen,

                  Could anyone help me remove the password in the attached BIOS dump? 850 G4 is pretty new and I can't find any success feedback here. Thanks a lot everyone!
                  try ..
                  Attached Files
                  Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

                  >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

                  Every donation made will go towards server fees and maintenance costs.

                  Comment


                    Re: HP BIOS unlock tool

                    Hi,
                    I Unlocked the bios on my hp 650 G1 Using hp unlocker tool,
                    the problem i am having is that as the laptop starts to load windows the wait circle keeps on spinning with the windows logo but never loads the window.
                    i have changed the hard disk, tried installing the new windows, new ram, different processor but no joy. also when I install the old bios backup, the behaviour does not changed, I also updated the bios an factory reset it but no joy.
                    i believe the problem Is with the bios.
                    i have attached both original and unlocked files.
                    anybody can help/guide?
                    Attached Files

                    Comment


                      Re: HP BIOS unlock tool

                      6050A2922701-MB-A01 bios please

                      Comment


                        Re: HP BIOS unlock tool

                        Originally posted by Raj.verma.soni View Post
                        6050A2922701-MB-A01 bios please
                        You're off-topic here, create your own thread and upload your bios backup in it.
                        ----------------------------------------------------------------------------------------------------------------------------------------------------------
                        All donations to Badcaps are welcome.
                        Become a Badcaps supporter
                        >>>>> click on this link to donate <<<<<
                        Thanks to all supporters.​
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                        Doctrina est fructus dulcis, radicis amarae.
                        .

                        Comment


                          Re: HP BIOS unlock tool

                          Buona serata ragazzi, posseggo un hp 840 G7.
                          Il bios non ha alcuna password, ma è stato modificato da HP su richiesta.
                          Il bios presente non permette l'installazione di windows 10, ne consente la partenza di una chiavetta usb bootabile.
                          Allego il file, puo essere utile per studio.
                          Attached Files

                          Comment


                            Re: HP BIOS unlock tool

                            Originally posted by Reigor3 View Post
                            Buona serata ragazzi, posseggo un hp 840 G7.
                            Il bios non ha alcuna password, ma è stato modificato da HP su richiesta.
                            Il bios presente non permette l'installazione di windows 10, ne consente la partenza di una chiavetta usb bootabile.
                            Allego il file, puo essere utile per studio.
                            Originally posted by Google translate View Post
                            Good evening guys, I own an hp 840 G7.
                            The bios has no password, but has been changed by HP upon request.
                            The bios present does not allow the installation of windows 10, it allows the start of a bootable USB key.
                            I attach the file, it can be useful for study.
                            Write in English please.
                            Upload your 16MB bios backup here.
                            What do you mean by "does not allow installation of windows 10" & "has been changed by HP "?
                            Last edited by Vesko356; 08-19-2021, 11:38 AM.
                            ----------------------------------------------------------------------------------------------------------------------------------------------------------
                            All donations to Badcaps are welcome.
                            Become a Badcaps supporter
                            >>>>> click on this link to donate <<<<<
                            Thanks to all supporters.​
                            ----------------------------------------------------------------------------------------------------------------------------------------------------------
                            Doctrina est fructus dulcis, radicis amarae.
                            .

                            Comment


                              Re: HP BIOS unlock tool

                              @vesko356 help me for unlock 840 g6 bios
                              Attached Files
                              Last edited by rmfaisal59; 08-19-2021, 01:12 PM.

                              Comment


                                Re: HP BIOS unlock tool

                                Originally posted by rmfaisal59 View Post
                                @vesko356 help me for unlock 840 g6 bios
                                Sure, I've just sent you the file & instructions.
                                ----------------------------------------------------------------------------------------------------------------------------------------------------------
                                All donations to Badcaps are welcome.
                                Become a Badcaps supporter
                                >>>>> click on this link to donate <<<<<
                                Thanks to all supporters.​
                                ----------------------------------------------------------------------------------------------------------------------------------------------------------
                                Doctrina est fructus dulcis, radicis amarae.
                                .

                                Comment


                                  Re: HP BIOS unlock tool

                                  Hi please unlock my hp bios 745 G2 file I'm attaching

                                  Comment


                                    Re: HP BIOS unlock tool

                                    Please help 745 G2 bios unlock I'm attaching the bin file now please unlock it
                                    Attached Files

                                    Comment


                                      Re: HP BIOS unlock tool

                                      Originally posted by Vesko356 View Post
                                      Sure, I've just sent you the file & instructions.
                                      Sir help me unlock bios password sir please
                                      Attached Files

                                      Comment


                                        Re: HP BIOS unlock tool

                                        @vesko356 I'm new to this forum and please help me sir my hp 745 G2 bios file it will be great help for me sir

                                        Comment


                                          Re: HP BIOS unlock tool

                                          Originally posted by Millanarun View Post
                                          @vesko356 I'm new to this forum and please help me sir my hp 745 G2 bios file it will be great help for me sir
                                          There's no need to write several messages in a row about the same thing.
                                          Be patient!
                                          You have an AMD platform, and afaik this model should have two chips - 8 and 2 MB, what programmer and software do you use? What is the inscription on the chips?
                                          ----------------------------------------------------------------------------------------------------------------------------------------------------------
                                          All donations to Badcaps are welcome.
                                          Become a Badcaps supporter
                                          >>>>> click on this link to donate <<<<<
                                          Thanks to all supporters.​
                                          ----------------------------------------------------------------------------------------------------------------------------------------------------------
                                          Doctrina est fructus dulcis, radicis amarae.
                                          .

                                          Comment

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