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    #81
    Re: HP BIOS unlock tool

    Always the larger one. 25Q128A is 128Mb, 25Q16DVSIG is 16Mb. So 25Q128A is the one you need to work on.

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      #82
      Re: HP BIOS unlock tool

      Originally posted by GabTal View Post
      Hi everyone, i need help.
      I have a second-hand elitebook 850 g1 with bios locked by password.
      Understood that i need to unlock the BIOS is the ch431a programmer+soip8 with the software to dump my own bios file, to reprogram it and at last flash it. But i see on the motherboard two chips. Which is the correct one? I need to reprogram both bios?
      I've attached the img to be more clear.
      Thanks everyone
      Hello. I guess it is the chip with the orange dot on the left on your picture

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        #83
        Re: HP BIOS unlock tool

        Originally posted by GabTal View Post
        Hi everyone, i need help.
        I have a second-hand elitebook 850 g1 with bios locked by password.
        Understood that i need to unlock the BIOS is the ch431a programmer+soip8 with the software to dump my own bios file, to reprogram it and at last flash it. But i see on the motherboard two chips. Which is the correct one? I need to reprogram both bios?
        I've attached the img to be more clear.
        Thanks everyone
        Left one (with the pink dot on it) 25Q128A 13EC0 - you need to read this chip only.
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          #84
          Re: HP BIOS unlock tool

          Hi,

          first thanks for the great support here !

          A short feedback, the unlock with the provided file worked perfectly on my HP Probook 470 G2.

          Best,
          hallo51

          Comment


            #85
            Re: HP BIOS unlock tool

            Originally posted by tlfrance View Post
            Thanks for help. I saw 2 different ch341a programmers (black pcb and green pcb) . Difference seems around voltage (5v for black , 3,3 v for green). Which one should I take?
            I'll buy this https://rover.ebay.com/rover/0/0/0?m...2F153306934960
            Hope it will work for my 840 g3 bios

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              #86
              Re: HP BIOS unlock tool

              840 G3 i5 cpu, Desolder W25q128, puted on EZP, read bios .bin, just drag and drop 16MB bin on your .exe, erase chip and write .unlocked.bin

              25min works fine. Great job.
              Can u tell me how this tool works ? Thx verry much
              @RethoricalCheese

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                #87
                Re: HP BIOS unlock tool

                It just uses some keywords to find the password area and deletes (writes 0xFF-s) a part of it.

                Planning on an update to make it a bit more user-friendly. Mostly to display an error message when somebody wants to unlock an unverified/broken bios dump.
                But it takes some time, I have other projects to finish first.

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                  #88
                  Re: HP BIOS unlock tool

                  Originally posted by RethoricalCheese View Post
                  Always the larger one. 25Q128A is 128Mb, 25Q16DVSIG is 16Mb. So 25Q128A is the one you need to work on.
                  Thanks, I'm waiting for the programmer I've just bought. Now the last question is: how can I know which is the voltage of the bios? Googling I found some datasheet which says it's 1.8 and another one that's 3.0.*

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                    #89
                    Re: HP BIOS unlock tool

                    Originally posted by GabTal View Post
                    Thanks, I'm waiting for the programmer I've just bought. Now the last question is: how can I know which is the voltage of the bios? Googling I found some datasheet which says it's 1.8 and another one that's 3.0.*
                    Probably 3V , but you do not damage chip if its 1.8V (at least i never did) just programmer wont recognize it.

                    @RethoricalCheese Thx again for explain. I used try HxD when ive gote several SMC.bin files delivered from Hp support to figure out how to create it for myself, but never did

                    Confirmed : Probook 650 g1 i5 cpu, Desolder, puted on EZP, read bios .bin, just drag and drop .bin dump on your .exe, erase chip and write new created .unlocked.bin

                    Works great.

                    Comment


                      #90
                      Re: HP BIOS unlock tool

                      I know how SMC.bin files work but since I am unable to sign them without help from HP, it is useless knowledge. Right now editing bios is what works and is fast/easy enough for most people.

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                        #91
                        Re: HP BIOS unlock tool

                        work fine on my 2pcs HP 820 G2, but bios screen is little slower...when tap F10 i wait for 4,5 sec to open bios.... but works OK

                        very good job

                        thanks RethoricalCheese

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                          #92
                          Re: HP BIOS unlock tool

                          Originally posted by tinto View Post
                          work fine on my 2pcs HP 820 G2, but bios screen is little slower...when tap F10 i wait for 4,5 sec to open bios.... but works OK

                          very good job

                          thanks RethoricalCheese
                          Try updating BIOS to latest. Should fix that problem for you.
                          It seems to be slow on some older bios versions.

                          Comment


                            #93
                            Re: HP BIOS unlock tool

                            Originally posted by peste View Post
                            try this..
                            Hi have tried that also ordered new chip all it does 3 long beeps and 2 short have flashed smaller chip too no change do you think motherboard is damaged?

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                              #94
                              Re: HP BIOS unlock tool

                              Hi guys a complete n00b here.

                              I will attempt to flash my locked Elitebook 840 G1 over the weekend and I have a question.

                              If I understand correctly I just need to:
                              1. Get the bios dump from my laptop
                              2. Use the HPUnlocker tool located on the first page of this topic
                              3. Write the dump back to the bios chip


                              Do I need to worry about the ME region at all? Saw some posts mentioning you need to clean it? Or does the unlock tool already do this?

                              Comment


                                #95
                                Re: HP BIOS unlock tool

                                Originally posted by jg007 View Post
                                Hi guys a complete n00b here.

                                I will attempt to flash my locked Elitebook 840 G1 over the weekend and I have a question.

                                If I understand correctly I just need to:
                                1. Get the bios dump from my laptop
                                2. Use the HPUnlocker tool located on the first page of this topic
                                3. Write the dump back to the bios chip


                                Do I need to worry about the ME region at all? Saw some posts mentioning you need to clean it? Or does the unlock tool already do this?
                                1/2/3 - Yes
                                Don't worry about Me region, the tool doesn't change it, and since the bios is from your machine there is no need to alter the Me region, just write the unlocked bin file back to bios chip and you are good to go.
                                ----------------------------------------------------------------------------------------------------------------------------------------------------------
                                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


                                  #96
                                  Re: HP BIOS unlock tool

                                  Originally posted by Vesko356 View Post
                                  1/2/3 - Yes
                                  Don't worry about Me region, the tool doesn't change it, and since the bios is from your machine there is no need to alter the Me region, just write the unlocked bin file back to bios chip and you are good to go.
                                  Great, thanks!

                                  I'm thinking of using the ME Analyzer just to confirm the read did not corrupt the bios dump.

                                  Is there a way of confirming that the bios is really unlocked before I write it back to the chip?

                                  Comment


                                    #97
                                    Re: HP BIOS unlock tool

                                    Originally posted by jg007 View Post
                                    Great, thanks!

                                    I'm thinking of using the ME Analyzer just to confirm the read did not corrupt the bios dump.
                                    This is a good practice, also you can read the chip twice and compare both dumps with Total Commander, just to make sure the dump is OK.

                                    Originally posted by jg007 View Post
                                    Is there a way of confirming that the bios is really unlocked before I write it back to the chip?
                                    There is no need to do that, the tooll is doing the job perfectly.
                                    Last edited by Vesko356; 01-30-2020, 02:15 PM.
                                    ----------------------------------------------------------------------------------------------------------------------------------------------------------
                                    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


                                      #98
                                      Re: HP BIOS unlock tool

                                      Please help !
                                      SMC.bin for unlocking Bios : HP ProBook 650 G1
                                      Serial Sistem 5CG50716YS
                                      UUID Sistem 7F3B7601-3BB1E411-820378A5-3804C0FF
                                      Thanks !
                                      Last edited by lostr; 01-30-2020, 04:18 PM.

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                                        #99
                                        Re: HP BIOS unlock tool

                                        Originally posted by lostr View Post
                                        Please help !
                                        SMC.bin for unlocking Bios : HP ProBook 650 G1
                                        Serial Sistem 5CG50716YS
                                        UUID Sistem 7F3B7601-3BB1E411-820378A5-3804C0FF
                                        Thanks !
                                        Nobody can't give you the smc file, just dump your bios and use the tool for unlock.
                                        ----------------------------------------------------------------------------------------------------------------------------------------------------------
                                        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

                                          Originally posted by RethoricalCheese View Post
                                          If there are any issues, please do let me know so I can improve this tool.
                                          no problem here - thanks a lot for the unlocker.exe - had some bios dumps in the past with manual VSS editing via hxd - thx to you the routine is much faster now. Gonna try it on some 840g3 this week after i figured the best way to read the chip without desoldering it (standard soic8 clip is not fitting since they use 8-WSON Package here for the eeprom)

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