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Lenovo T490s bios password request.

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    Lenovo T490s bios password request.

    Hi guys pls help me with this file.
    Can someone clean for me pls.?
    Attached Files
    Last edited by SMDFlea; 01-21-2022, 03:39 AM. Reason: password request

    #2
    Re: Lenovo 490 bios request.

    file looks quite small but i have read and verified 3 times .

    Comment


      #3
      Re: Lenovo 490 bios request.

      Originally posted by vikivng View Post
      file looks quite small but i have read and verified 3 times .
      It is too small.Are you using a CH341A and a clip
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        #4
        Re: Lenovo 490 bios request.

        Hi,im using CH341a chip soldered directly onto programmer

        Comment


          #5
          Re: Lenovo 490 bios request.

          Originally posted by vikivng View Post
          Hi,im using CH341a chip soldered directly onto programmer
          Use NeoProgrammer,Colibri or ASProgrammer software ,you`ll find them all on the forum if you search.
          All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

          Comment


            #6
            Re: Lenovo 490 bios request.

            Yep neoprogrammer also gives the identical reading..

            Comment


              #7
              Re: Lenovo 490 bios request.

              Does anyone have any ideas on what the issue could be.?

              Comment


                #8
                Re: Lenovo 490 bios request.

                Originally posted by vikivng View Post
                Does anyone have any ideas on what the issue could be.?
                yes,after a closer look at it its the thunderbolt firmware, size 1MB. Look for another chip
                All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                Comment


                  #9
                  Re: Lenovo 490 bios request.

                  Please
                  Attached Files

                  Comment


                    #10
                    Re: Lenovo 490 bios request.

                    Originally posted by SMDFlea View Post
                    yes,after a closer look at it its the thunderbolt firmware, size 1MB. Look for another chip
                    Oh,,you mean this is not the bios chip.??

                    Comment


                      #11
                      Re: Lenovo 490 bios request.

                      Originally posted by vikivng View Post
                      Oh,,you mean this is not the bios chip.??
                      no it isn`t
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                      Comment


                        #12
                        Re: Lenovo 490 bios request.

                        ok thnx.

                        Comment


                          #13
                          Re: Lenovo 490 bios request.

                          Originally posted by vikivng View Post
                          ok thnx.
                          Find it ,make a few backups and compare them make sure theyre the same. Post one of the backups here so we can check if its good or not. Don`t try flashing another bios until then.
                          At post #1 you said you wanted your bios cleaning, did you mean the ME firmware or a password
                          All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                          Comment


                            #14
                            Re: Lenovo 490 bios request.

                            Originally posted by SMDFlea View Post
                            Find it ,make a few backups and compare them make sure theyre the same. Post one of the backups here so we can check if its good or not. Don`t try flashing another bios until then.
                            At post #1 you said you wanted your bios cleaning, did you mean the ME firmware or a password
                            I meant password.

                            Comment


                              #15
                              Re: Lenovo 490 bios request.

                              Hi,
                              could someone show me where this bios chip is located on this board.?
                              ThinkPad FT491/ FX390 NM-B891 Rev2.0

                              Comment


                                #16
                                Re: Lenovo 490 bios request.

                                Originally posted by vikivng View Post
                                Hi,
                                could someone show me where this bios chip is located on this board.?
                                ThinkPad FT491/ FX390 NM-B891 Rev2.0
                                Is this the right chip?
                                Attached Files

                                Comment


                                  #17
                                  Re: Lenovo 490 bios request.

                                  Originally posted by vikivng View Post
                                  Is this the right chip?
                                  No,thats a mosfet. See here https://www.allservice.ro/forum/images/T490s_bios.jpg ,post the part number on top of the chip thats arrowed
                                  All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                  Comment


                                    #18
                                    Re: Lenovo 490 bios request.

                                    WINBOND 25Q256JVEQ
                                    Must be this one!!

                                    Comment


                                      #19
                                      Re: Lenovo 490 bios request.

                                      Originally posted by vikivng View Post
                                      WINBOND 25Q256JVEQ
                                      Must be this one!!
                                      Thats the one.Its a WSON8 you`ll need an adapter,if you havn`t already got one,or you can solder wires to the pins.
                                      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                      Comment


                                        #20
                                        Re: Lenovo 490 bios request.

                                        Originally posted by SMDFlea View Post
                                        Thats the one.Its a WSON8 you`ll need an adapter,if you havn`t already got one,or you can solder wires to the pins.
                                        yes I saw this will be tricky to remove.

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