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    Re: RCUnlocker

    Originally posted by AAAC View Post
    @ogre4273
    Use UEFITool NE version and check UEFI Variables, there's usually one named AbtState, that one contains information if Absolute Computrace is Active.
    Then use an hex-editor and search for AbtState, a few bytes before the string you will find the header AA553F(h), to invalidate that variable make it AA553C(h), save changes.
    Do I need to do that on the 32mb bios dump? or I also need 16mb?
    My laptop is HP Elitebook 840 G6, is it applicable?

    Comment


      Re: RCUnlocker

      @AAAC

      There is indeed AbtState (see the pic below) so I need to change "F" to "C" right?

      What I think is that the computrace will be still active because I only modify the 32mb dump. Is there any other way to also disable it on 16mb dump?
      Attached Files

      Comment


        Re: RCUnlocker

        @ogre4273
        Is CompuTrace really ACTIVE? Because when it’s Active there’s an ASCII string (account number?) in the lines below AbtString.

        Comment


          Re: RCUnlocker

          Originally posted by AAAC View Post
          @ogre4273
          Is CompuTrace really ACTIVE? Because when it's Active there's an ASCII string (account number?) in the lines below AbtString.
          Oh is that so, then I analyze it further. About this dump, I just found it in the forum just to see what that AbtState looks like. I'm dumping my own bios when I received EZP2019 that I ordered. Thank you for your help and I'll be back shortly.

          Comment


            Re: RCUnlocker

            @AAAC

            so when removing computrace I only need to modify the main bios which is the 32mb? Sorry for asking, just making sure so that I can save some time without removing the whole board for the 16mb chip. Thank you again.

            Comment


              Re: RCUnlocker

              @ogre4273
              On the ones I’ve done, just modifying the 32MB chip contents is enough.

              Comment


                Re: RCUnlocker

                @AAAC
                Thank you for your help! I'll come back if it's successful. I hope I'll be able to remove it so that I would not spend money for patching my bios bin to remove it. Some people offering me 40 dollars just to patch it. Is your method same as them?

                Comment


                  Re: RCUnlocker

                  Originally posted by ogre4273 View Post
                  Is your method same as them?
                  I believe so.

                  Comment


                    Re: RCUnlocker

                    Removing it from bios does not remove it from their servers.

                    So there will probably be an issue when the next user tries to sign up for computrace. But if not, this works fine.

                    There are people who have official tools to remove both from server and bios. But since it goes through their servers and users IP has to be whitelisted first, it's no use to anybody who is not approved.

                    That said, you could probably get it removed server-side just by sending them your SN and asking it to be removed.

                    Comment


                      Re: RCUnlocker

                      Hello @RethoricalCheese !! What do you mean by next user sign up? If I remove or make computrace inactive from the bios does it mean that it will be active again sometime in the future? And what will happen to the server side if I managed to remove it?
                      Last edited by ogre4273; 07-28-2022, 10:17 PM.

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                        Re: RCUnlocker

                        If you disable it and never ever want to use it then it will not return. No problems at all. Laptop will not try to query computrace so nothing will happen.

                        But if the next user really wants to use computrace, it most probably won't work because the SN is tied to previous computrace client.

                        So if you or the next user does not want it to work then there will be no problems when you just patch bios. It's mostly for business clients anyway so if you don't resell to businesses, there won't be an issue.

                        Comment


                          Re: RCUnlocker

                          Originally posted by AAAC View Post
                          I believe so.
                          840 G7 Absolute Persistence Active
                          Hi AAAC, could you please help me to remove computrace? the BIOS has no password, but hp absolute persistence is active, My model is a 840 G7. I will be very grateful, please, thank you
                          Attached Files

                          Comment


                            Re: RCUnlocker

                            @chypnotic
                            How did you read this BIOS file? If you used a programmer, which programmer did you use?
                            To me seems like the file is incomplete, by the model number it should be 32MB, maybe there's another chip.

                            Comment


                              Re: RCUnlocker

                              Originally posted by AAAC View Post
                              @chypnotic
                              How did you read this BIOS file? If you used a programmer, which programmer did you use?
                              To me seems like the file is incomplete, by the model number it should be 32MB, maybe there's another chip.
                              I have removed only the 16 meg 25Q128JV chip with the SOFI SP8-F programmer. The chip had a password to enter the Bios, but using the RCUnlocker program, I have managed to erase the password, but now I find that computrace is active, would you help me remove it please? Thank you

                              Comment


                                Re: RCUnlocker

                                @AAAC

                                hello again, I managed to get my bios dump both 32mb and 16mb.

                                Can I disable computrace if Manufacture Programming Mode is enabled?

                                and if not, would you unlock it for me? I would attach it here if you want. Thank you!

                                Comment


                                  Re: RCUnlocker

                                  Originally posted by ogre4273 View Post
                                  @AAAC

                                  hello again, I managed to get my bios dump both 32mb and 16mb.

                                  Can I disable computrace if Manufacture Programming Mode is enabled?

                                  and if not, would you unlock it for me? I would attach it here if you want. Thank you!
                                  UPDATE:
                                  @AAAC
                                  Forget about this text that I quoted. I found out that there is a number below Abtstate, should I remove it or just change AA553F to AA553C? The picture is attached below.
                                  Attached Files

                                  Comment


                                    Re: RCUnlocker

                                    @ogre4273
                                    Invalidating the variable should be enough. After you do it and open the new BIOS file with UEFITOOL NE version, you will find that now it will show as Invalid.

                                    Comment


                                      Re: RCUnlocker

                                      @RethoricalCheese

                                      sir i tried with 32mb chip but fail

                                      would you add 32mb please

                                      Comment


                                        Re: RCUnlocker

                                        Originally posted by AAAC View Post
                                        @ogre4273
                                        Invalidating the variable should be enough. After you do it and open the new BIOS file with UEFITOOL NE version, you will find that now it will show as Invalid.
                                        @AAAC
                                        Okay, I'll do it. Last question.

                                        the 16mb chip is not needed right?
                                        So what I will do is get the latest dump of my 32mb bios (will dump it 3x to be sure) and then invalidate the hex 3F to 3C then flash it again? then that's it? Sorry if I ask too many questions. Thank you!

                                        Comment


                                          Re: RCUnlocker

                                          @ogre4273
                                          I've been modifying only the 32MB chip.

                                          Dump and save the file 3 times, then check all 3 files are identical (if you use a utility like WinRAR or similar, you can ZIP or RAR the files, then open the ZIP or RAR resulting file, on the far right there's a column with CRC32 values, if all they match all the files are exact copies).

                                          Comment

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