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Lenovo Yoga 15 locked bios

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    Lenovo Yoga 15 locked bios

    Hi there,
    My clients bios is locked. He bought it this was from a firm who were giving these away very cheap. The bios can be entered while pressing simply enter but nothing can be changed and all boot options are set to exclusive minus the lan card.
    The board is a ZIUS1 LA-B591P. Could really use a master password if there is one or some bios dump with schematic. Although I believe I located it but just to be sure.

    Thank you.

    #2
    Re: Lenovo Yoga 15 locked bios

    Small bump for schematic. I managed to get a new bios but it still is locked and cant change anything within. I'm trying to locate where the SVP is on the board.

    Comment


      #3
      Re: Lenovo Yoga 15 locked bios

      The only way to do that is to replace the bios chip.
      The Night Drop Down, I Will Keep Try Until..., You Never know.
      Dushi Kòrsou, Nos Tei.

      Comment


        #4
        Re: Lenovo Yoga 15 locked bios

        The bios chip doesnt contain the key, already tested that. The key is locked away somewhere else, hence the need for a schematic.

        Comment


          #5
          Re: Lenovo Yoga 15 locked bios

          perhaps the password is in ene/ite/nuvoton
          you must to flash it or replace it

          Comment


            #6
            Re: Lenovo Yoga 15 locked bios

            Maybe. Still, a schematic would be the best.

            Comment


              #7
              Re: Lenovo Yoga 15 locked bios

              Originally posted by Scootie View Post
              Maybe. Still, a schematic would be the best.
              can you share files for this model

              Comment


                #8
                Re: Lenovo Yoga 15 locked bios

                How can we remove the BIOS pwd?

                Here's the schematic, as an attachement.
                Attached Files

                Comment


                  #9
                  Re: Lenovo Yoga 15 locked bios

                  Originally posted by buglerbalint View Post
                  How can we remove the BIOS pwd?

                  Here's the schematic, as an attachement.
                  24s08

                  maybe same
                  https://www.badcaps.net/forum/showpo...13&postcount=8
                  Attached Files
                  Last edited by Maxpower3; 09-17-2022, 06:47 AM.

                  Comment


                    #10
                    Re: Lenovo Yoga 15 locked bios

                    Originally posted by Maxpower3 View Post
                    24s08
                    Is this the PIN nr. 1?
                    Attached Files

                    Comment


                      #11
                      Re: Lenovo Yoga 15 locked bios

                      Originally posted by buglerbalint View Post
                      Is this the PIN nr. 1?
                      if no chip, it's in the EC then
                      it depends on the version

                      rest only Kb9022 ??

                      look here for Kb9022
                      https://www.badcaps.net/forum/showpo...4&postcount=19
                      Attached Files
                      Last edited by Maxpower3; 09-17-2022, 07:06 AM.

                      Comment


                        #12
                        Re: Lenovo Yoga 15 locked bios

                        Originally posted by Maxpower3 View Post
                        if no chip, it's in the EC then
                        it depends on the version

                        rest only Kb9022 ??

                        look here for Kb9022
                        https://www.badcaps.net/forum/showpo...4&postcount=19
                        That's bad news. I found it, it's an ENE KB9022Q chip with 124 pins.

                        Is it possible to read it with CH341? Maybe through the keyboard connector?
                        If I have the bin file could the lenovo tool remove the pwd or should I simply post here?
                        Last edited by buglerbalint; 09-17-2022, 07:20 AM.

                        Comment


                          #13
                          Re: Lenovo Yoga 15 locked bios

                          Originally posted by buglerbalint View Post
                          That's bad news. I found it, it's an ENE KB9022Q chip with 124 pins.

                          Is it possible to read it with CH341? Maybe through the keyboard connector?
                          If I have the bin file could the lenovo tool remove the pwd or should I simply post here?
                          i use rt809f for that with adapter but it must be simpler, maybe with SVOD or others. unfortunately I don't know

                          auto patch not working!
                          just post your file here
                          or compare if implementation is same and change 0x200 to 022F (look at pics)
                          Attached Files

                          Comment


                            #14
                            Re: Lenovo Yoga 15 locked bios

                            Originally posted by Maxpower3 View Post
                            i use rt809f for that with adapter but it must be simpler, maybe with SVOD or others. unfortunately I don't know

                            auto patch not working!
                            just post your file here
                            or compare if implementation is same and change 0x200 to 022F (look at pics)
                            Ok, thank you for your help!
                            I'll get back as soon as I have more time for it!

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