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Supervisor password on Lenovo T490 and T490s

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    Supervisor password on Lenovo T490 and T490s

    Hy everyone, my first thread. Has anyone succeeded in removing SVP stored in the MEC1663 chip in the T490 and T490s? I have a MEC Progammer but I don't know where to connect the wires. Also I undertand that if you erase the eeprom portion of the chip the serial number, mac address and other information are lost. One other forums someone said that if you solder a new chip the bios writes in it what it has too and the laptop works. I don't really want to begin soldering new BGA chips and destroying the laptop.

    #2
    Re: Supervisor password on Lenovo T490 and T490s

    that wont work,
    look here:
    https://www.badcaps.net/forum/showthread.php?t=81573

    Comment


      #3
      Re: Supervisor password on Lenovo T490 and T490s

      I know about the patched bioses which modify hardware ID but there isn t one for the T490s

      Comment


        #4
        Re: Supervisor password on Lenovo T490 and T490s

        some one done with it?

        Comment


          #5
          Re: Supervisor password on Lenovo T490 and T490s

          i also have one t490s computrace enabled... i need patched dump

          Comment


            #6
            Re: Supervisor password on Lenovo T490 and T490s

            Hello guys I need a patch for lenovo T490s, I have one with computrace. Any help would be appriciated

            Comment


              #7
              Re: Supervisor password on Lenovo T490 and T490s

              old dxe driver unlock dont work, the 7 gen and up have other method

              Comment


                #8
                Re: Supervisor password on Lenovo T490 and T490s

                Thanks for the reply but do you know the other method?

                Comment


                  #9
                  Re: Supervisor password on Lenovo T490 and T490s

                  You need RT809 or vertyanov, change jtag_rst resistor from pulldown to pullup. Attach programmer to MEC jtag. Read, erase, rewrite (or just delete password section if you use vertyanov).

                  Comment


                    #10
                    Re: Supervisor password on Lenovo T490 and T490s

                    Originally posted by RethoricalCheese View Post
                    You need RT809 or vertyanov, change jtag_rst resistor from pulldown to pullup. Attach programmer to MEC jtag. Read, erase, rewrite (or just delete password section if you use vertyanov).
                    where is the password section
                    Attached Files
                    Last edited by smiley60; 09-08-2021, 05:35 AM.

                    Comment


                      #11
                      Re: Supervisor password on Lenovo T490 and T490s

                      Originally posted by Nico Latour View Post
                      old dxe driver unlock dont work, the 7 gen and up have other method
                      where can i find the method i have a t490 locked bios

                      Comment


                        #12
                        Re: Supervisor password on Lenovo T490 and T490s

                        Originally posted by smiley60 View Post
                        where is the password section

                        Not there. Read my quote again

                        Do you even have vertyanov or rt809?

                        Comment


                          #13
                          Re: Supervisor password on Lenovo T490 and T490s

                          Originally posted by RethoricalCheese View Post
                          Not there. Read my quote again

                          Do you even have vertyanov or rt809?
                          yes i have rt809h

                          Comment


                            #14
                            Re: Supervisor password on Lenovo T490 and T490s

                            then move jtag_rst resistor from pull-down to pull-up, attach rt809h to mec jtag, read, write and it's unlocked.

                            Comment


                              #15
                              Re: Supervisor password on Lenovo T490 and T490s

                              Originally posted by rethoricalcheese View Post
                              then move jtag_rst resistor from pull-down to pull-up, attach rt809h to mec jtag, read, write and it's unlocked.
                              dont want any modifying
                              just read erase write
                              AND WHERE IS THIS MEC JTAG
                              IM A LITTLE NOOB

                              Comment


                                #16
                                Re: Supervisor password on Lenovo T490 and T490s

                                Yes, no modify needed. There's another topic about mec, search for it and read.

                                Comment


                                  #17
                                  Re: Supervisor password on Lenovo T490 and T490s

                                  Originally posted by RethoricalCheese View Post
                                  Yes, no modify needed. There's another topic about mec, search for it and read.
                                  AND WHAT ABOUT MODIFYING U5502 THE LITTLE 1 MB CHIP

                                  Comment


                                    #18
                                    Re: Supervisor password on Lenovo T490 and T490s

                                    Why?

                                    Comment


                                      #19
                                      supervisor password lenovo t490s

                                      supervisor password lenovo t490s any way to unlock it ????

                                      Comment


                                        #20
                                        Re: Supervisor password on Lenovo T490 and T490s

                                        Originally posted by RethoricalCheese View Post
                                        then move jtag_rst resistor from pull-down to pull-up, attach rt809h to mec jtag, read, write and it's unlocked.
                                        can you help me in locating the jtag_rst resistor from pull-down to pull-up.. with picture pointing location please

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