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    Re: HP BIOS unlock tool

    Originally posted by tmax View Post
    hello my name is tom I am new I have a lost hp elitebook pass I read the mix25l3255 chip I did several tests in hex in dump but it does not want to skip the security who could help me please
    Welcome to the Badcaps.net Forums.
    Add full model name of the device, serial number, and attach the bios dump to your request.
    Read forum rules please.
    BIOS guides, methods, resources and tools
    RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*

    .
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    Become a Badcaps supporter
    >>>>> click on this link to donate <<<<<
    Thanks to all supporters.​
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      Re: HP BIOS unlock tool

      Hello sir, I'm sorry

      hp elitbook 645 g9 notebook pc
      5cd248fzrh

      Comment


        Re: HP BIOS unlock tool

        Originally posted by Vesko356 View Post
        Welcome to the Badcaps.net Forums.
        Add full model name of the device, serial number, and attach the bios dump to your request.
        Read forum rules please.
        BIOS guides, methods, resources and tools
        RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*

        .
        file is here thanks all
        Attached Files

        Comment


          Re: HP BIOS unlock tool

          Originally posted by tmax View Post
          file is here thanks all
          No, 362.0 KB is not good enough for a good read. Try again.
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          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.
          .

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            Re: HP BIOS unlock tool

            Originally posted by Vesko356 View Post
            No, 362.0 KB is not good enough for a good read. Try again.

            I think my reading is good so I think I am not on the eeprom any info please

            Comment


              Re: HP BIOS unlock tool

              Originally posted by tmax View Post
              I think my reading is good so I think I am not on the eeprom any info please
              No, as I said it's not good at all. This model should have 32MB bios.
              Last edited by Vesko356; 04-17-2023, 04:22 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


                Re: HP BIOS unlock tool

                Does this unlock look suspicious? This is on an EliteBook 745 G3. I tried booting with the unlocked rom but all I got was black screen with power & caps lock light on.

                I also tried the unlock on a rom from a water damaged 755 G5 and the unlock "looks" much more believable. Too bad I can't boot this one up.

                Attached Files

                Comment


                  Re: HP BIOS unlock tool

                  Yes, your first read is bad. Did you verify what you read?

                  Oh and thatswhy RCUnlocker is the one to use. It will kinda let you know if you have a bad read.

                  Comment


                    Re: HP BIOS unlock tool

                    Originally posted by RethoricalCheese View Post
                    Yes, your first read is bad. Did you verify what you read?

                    Oh and thatswhy RCUnlocker is the one to use. It will kinda let you know if you have a bad read.
                    Ah ok I was only aware of HPUnlocker. I'll re-read & verify the rom and try RCUnlocker tomorrow. Thanks.

                    Comment


                      Re: HP BIOS unlock tool

                      If you already messed up the first read and then wrote a faulty file then it's no use. Already corrupted.

                      Comment


                        Re: HP BIOS unlock tool

                        Originally posted by RethoricalCheese View Post
                        If you already messed up the first read and then wrote a faulty file then it's no use. Already corrupted.
                        I wrote my "read1.bin" back to the rom and it is booting. Is my read actually bad?

                        Comment


                          Re: HP BIOS unlock tool

                          Probably using Ch341A?

                          I guess it fails to read/write second half of the file properly so that would explain it.

                          Try reading and verifying, see if it passes.

                          Comment


                            Re: HP BIOS unlock tool

                            Yes I am using CH431A

                            I have a new read which I also verified. Checksum is the same as my 2 original reads.
                            Attached Files
                            Last edited by Vesko356; 04-19-2023, 07:43 PM. Reason: Removed external url

                            Comment


                              Re: HP BIOS unlock tool

                              Originally posted by 0x888816 View Post
                              Yes I am using CH431A

                              I have a new read which I also verified. Checksum is the same as my 2 original reads.
                              You just chose the wrong chip - U366, that's your problem. It is near the RTC battery. The password is in the other with board positional name U365, located next to the CPU fan. Upload a dump of it here and I'll remove the password. Read it twice and compare the contents beforehand.

                              .
                              ----------------------------------------------------------------------------------------------------------------------------------------------------------
                              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 Vesko356 View Post
                                You just chose the wrong chip - U366, that's your problem. It is near the RTC battery. The password is in the other with board positional name U365, located next to the CPU fan. Upload a dump of it here and I'll remove the password. Read it twice and compare the contents beforehand.
                                Thank you RCUnlocker recognized it and unlocked it BUT I accidentally made a huge mess while soldering and now it wont boot into bios
                                My immediate repair didn't work so I'll have to get my multimeter out and figure out what's going on

                                Comment


                                  Re: HP BIOS unlock tool

                                  Hello Brother, Can you please help i Managed to read the BIOS finally, can you please unlock it
                                  Attached Files

                                  Comment


                                    Re: HP BIOS unlock tool

                                    Originally posted by animorca11 View Post
                                    Hello Brother, Can you please help i Managed to read the BIOS finally, can you please unlock it
                                    Why don't you use the tool yourself? BIOS guides, methods, resources and tools
                                    Next time don't post your request in two threads at the same time.
                                    Find the topic for the specific laptop model and post a request there.
                                    This thread is for requests in case you didn't succeed on your own or the tool can't unlock the dump.
                                    Read the rules.
                                    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.
                                    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

                                      Hello Everybody:

                                      I am try to open the Hp Bios Unlock Tool i have received an error, in Win 10 Pro 64b.

                                      Thankyou very much.
                                      Attached Files

                                      Comment


                                        Re: HP BIOS unlock tool

                                        Originally posted by Mojtabasultani View Post
                                        Hello Everybody:

                                        I am try to open the Hp Bios Unlock Tool i have received an error, in Win 10 Pro 64b.

                                        Thankyou very much.
                                        Read the rules before posting:
                                        RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*

                                        Use the search engine and read the thread carefully, especially post #1:
                                        Originally posted by RethoricalCheese View Post

                                        When you have your dump, just drag and drop your file on my HPUnlocker tool and it will create a new file. It will add "_unlocked" to the name of your locked file.
                                        https://www.badcaps.net/forum/showth...55#post1203555

                                        .
                                        ----------------------------------------------------------------------------------------------------------------------------------------------------------
                                        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. Im new with this. I want to unlock an HP 455 G7 Bios. Can you help. Sorry for my english. Im from Guatemala.

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