mec 16xx dump with info block

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  • wangbreeze
    Member
    • Jan 2024
    • 19
    • USA

    #401
    Originally posted by wangbreeze
    Sharing my experience. I have two t490 that need svp removal. I have the rt809f programmer.

    the first one did not give me problems. Read erase write and svp is gone.

    however, the second one I cannot even recognize the mec chip. The programmer reported 0xCDCDCDCD as the mec chip id. This is the same as if the chip is disconnected from the programmer (i actually tried it with out any pins attached to the programmer, it also reported this chip id).

    I wonder what could be the cause of this discrepancy in the chips response. The one without problem has it’s BIOS dated back to 2021 while the one giving me problems has BIOS dating back to 2022 (so it’s newer).

    anyone can help? Thanks.
    Turned out to be the programmer issue. The RT809F I have worked on the first machine but stopped working on the second (showing 0xCDCDCDCD chip id and reading garbage). I used another rt809h and everything works now.

    Comment

    • vuquanghoanh
      Member
      • Feb 2023
      • 45
      • US

      #402
      Originally posted by wangbreeze

      did you update the product brand to thinkpad T**?
      Sure. I have successfully entered the brand name. Just like in the photo.
      But every time I start up, the laptop still reports error 2202.
      I don't know what to do anymore​
      Attached Files

      Comment

      • Maxpower3
        Bad Veteran
        • Feb 2018
        • 1153
        • France

        #403
        Originally posted by vuquanghoanh

        Sure. I have successfully entered the brand name. Just like in the photo.
        But every time I start up, the laptop still reports error 2202.
        I don't know what to do anymore
        not 7th gen just 7th
        Click image for larger version  Name:	Nouveau Image bitmap (2).bmp Views:	0 Size:	1.14 MB ID:	3220764
        otherwise use planar service with your serial
        https://www.badcaps.net/forum/troubl...id#post3220825
        Last edited by Maxpower3; 02-21-2024, 10:29 AM.

        Comment

        • noktabiz
          New Member
          • Aug 2016
          • 8
          • türkiye

          #404
          Originally posted by vuquanghoanh
          I have successfully removed EC password. The system has received complete information. But when starting the laptop there is still message 2202: Product name is invalid.
          I used the Gold key to re-enter the information but the problem was not resolved.
          Has anyone solved this problem yet?​
          Thanks,
          Change the ec you use. and write another one and enter your information again

          Comment

          • vuquanghoanh
            Member
            • Feb 2023
            • 45
            • US

            #405
            Originally posted by Maxpower3

            not 7th gen just 7th
            Click image for larger version Name:	Nouveau Image bitmap (2).bmp Views:	0 Size:	1.14 MB ID:	3220764
            otherwise use planar service with your serial
            https://www.badcaps.net/forum/troubl...id#post3220825
            Thank you so much.
            I have been trying to enter Brand name for 1 week but without success. With your guidance, I succeeded the first time.
            Thank you so much.

            Comment

            • vuquanghoanh
              Member
              • Feb 2023
              • 45
              • US

              #406
              Originally posted by noktabiz

              Change the ec you use. and write another one and enter your information again
              I followed Maxpower3's instructions and it worked. Follow him, you will also succeed.
              Let's thank Maxpower3.​

              Comment

              • mily.gawel
                Member
                • Aug 2018
                • 42
                • Polska

                #407
                Hello, maybe one of you can help me. I have 2 T14s laptops with board number NM-C891, after soldering the wires and moving the resistor, I still get the message in SVOD 4.

                MEC IDCODE: B1240020
                Device ID: 0
                Device Revision: 0
                Device Status: 0
                Flash Status: 0000000000
                Boot Block in not protected mode
                Boot Block in not protected mode

                the reading is empty every time. I will add that in the X390, where the board is very similar, I managed to do it every time. Maybe someone had a similar problem ?

                Comment

                • wangbreeze
                  Member
                  • Jan 2024
                  • 19
                  • USA

                  #408
                  Originally posted by mily.gawel
                  Hello, maybe one of you can help me. I have 2 T14s laptops with board number NM-C891, after soldering the wires and moving the resistor, I still get the message in SVOD 4.

                  MEC IDCODE: B1240020
                  Device ID: 0
                  Device Revision: 0
                  Device Status: 0
                  Flash Status: 0000000000
                  Boot Block in not protected mode
                  Boot Block in not protected mode

                  the reading is empty every time. I will add that in the X390, where the board is very similar, I managed to do it every time. Maybe someone had a similar problem ?
                  I think the chip is locked sometimes. In this case, you cannot read. You would need to erase and write the EC file extracted from Lenovo BIOS update package.

                  Comment

                  • mily.gawel
                    Member
                    • Aug 2018
                    • 42
                    • Polska

                    #409
                    Unfortunately I tried but it also cannot be cleaned.

                    Comment

                    • TigTex
                      New Member
                      • Jun 2014
                      • 3
                      • Portugal

                      #410
                      Originally posted by Maxpower3

                      try
                      Hey Maxpower3, I've noticed that you've filled with F the blocks from 0x300 to 0x34F. Is this all it takes with all MEC1663 to erase SVP or was this something specific for this user's laptop?
                      I've screwed up a T14 gen1 and now I need to erase the SVP to make it bootable again (0199 System Security error). I'm going to use a Vertyanov JIG V3 for that and I would like to avoid losing all OEM info and windows activation.

                      Comment

                      • Maxpower3
                        Bad Veteran
                        • Feb 2018
                        • 1153
                        • France

                        #411
                        Originally posted by TigTex

                        Hey Maxpower3, I've noticed that you've filled with F the blocks from 0x300 to 0x34F. Is this all it takes with all MEC1663 to erase SVP or was this something specific for this user's laptop?
                        I've screwed up a T14 gen1 and now I need to erase the SVP to make it bootable again (0199 System Security error). I'm going to use a Vertyanov JIG V3 for that and I would like to avoid losing all OEM info and windows activation.
                        yes 300 to 34F is enough, no loss of DMI information or windows key​
                        just look at the following CON# (43 4F 4E 23 53 00 02 A8 F4) or BC B0 B1 DC AC FF FD 57 0B 02 A8) in Xor version.
                        Same principle for all, can be doubled on certain models​
                        Attached Files

                        Comment

                        • skazide
                          Senior Member
                          • Jul 2015
                          • 142
                          • morocco

                          #412
                          Originally posted by monolith-2001
                          I have read the EEPROM area of MEC1663.
                          Where and how should I edit the BIN file to remove only the BIOS password?"
                          Thank you in advance.

                          X1 Carbon Gen8 20UA
                          how you did it bro

                          Comment

                          • EGUG
                            Member
                            • May 2024
                            • 11
                            • Deutschland

                            #413
                            Hello,

                            I have RT809F and a damaged Thinkpad T490 board (M2-Connector was damaged and is removed). I use it for testing the procedure of removing the SVP from MEC-Chip. (Yes, I have the SVP.) I do this test because we received Thinkpads T490 donated for our school but they have SVPs. At present they are used. But during summer holidays I hope to remove the SVPs this way.

                            Typ 20N3001EGE
                            Serial PF1DTJNC
                            Bios N2IET99W (1.77)

                            The MEC chip is recognized correctly. I can read and write the MEC using MEC1633_256. My problem is that erasing of the Chip doest not work.

                            Does anyone have an idea what the cause could be?
                            Attached Files

                            Comment

                            • ajbernasko
                              Badcaps Veteran
                              • Mar 2022
                              • 229
                              • ghana

                              #414
                              I have SVOD4, I can read and write it5679-1M chip for the P14s gen 2, nm-D451. Can someone share the file for this chip ?

                              Comment

                            • EGUG
                              Member
                              • May 2024
                              • 11
                              • Deutschland

                              #415
                              Nobody has an idea ? (Post 413)

                              Comment

                              • vuquanghoanh
                                Member
                                • Feb 2023
                                • 45
                                • US

                                #416
                                Hi,
                                My laptop has bios password.
                                Thinkpad T490S FT491/FX390 NM-B891 REV 2.0
                                S/T: MJ-0C3ABP
                                Here is bios dump. Please unlock it.
                                Thanks,...​
                                Attached Files

                                Comment

                                • Stefan Steff
                                  Badcaps Veteran
                                  • Mar 2024
                                  • 222
                                  • Romania

                                  #417
                                  Originally posted by vuquanghoanh
                                  Hi,
                                  My laptop has bios password.
                                  Thinkpad T490S FT491/FX390 NM-B891 REV 2.0
                                  S/T: MJ-0C3ABP
                                  Here is bios dump. Please unlock it.
                                  Thanks,...​
                                  Hi !
                                  There is no difference between your uploaded MEC content and the factory one (attached)...they are identical.
                                  The password is stored in the 2K EEPROM inside the MEC.
                                  There are programmers (like SVOD 4) that can read the eeprom content separately and then you can delete the password.
                                  If you don't have such a programmer you can simply erase and reprogram the whole MEC1633 and after that reinsert the DMI info.
                                  This is my opinion.

                                  SS
                                  Attached Files

                                  Comment

                                  • vuquanghoanh
                                    Member
                                    • Feb 2023
                                    • 45
                                    • US

                                    #418
                                    Originally posted by Stefan Steff

                                    Hi !
                                    There is no difference between your uploaded MEC content and the factory one (attached)...they are identical.
                                    The password is stored in the 2K EEPROM inside the MEC.
                                    There are programmers (like SVOD 4) that can read the eeprom content separately and then you can delete the password.
                                    If you don't have such a programmer you can simply erase and reprogram the whole MEC1633 and after that reinsert the DMI info.
                                    This is my opinion.

                                    SS
                                    I read the Mec file, erased the chip. Reload the original file (do not edit). Password is removed. This is how I did it successfully for the T490S and T14 Gen 1.
                                    Thank you very much​

                                    Comment

                                    • Stefan Steff
                                      Badcaps Veteran
                                      • Mar 2024
                                      • 222
                                      • Romania

                                      #419
                                      Originally posted by vuquanghoanh

                                      I read the Mec file, erased the chip. Reload the original file (do not edit). Password is removed. This is how I did it successfully for the T490S and T14 Gen 1.
                                      Thank you very much​
                                      Wonderful
                                      You're welcome !

                                      Comment

                                      • bhatt
                                        Senior Member
                                        • Dec 2015
                                        • 90
                                        • pakistan

                                        #420
                                        Originally posted by aldopc
                                        Re: mec 16xx dump with info block



                                        Hello, do it with this tool and watch this video. https://www.youtube.com/watch?v=gKL9JUTgo-g&t=519s
                                        what is the u1u zip file password

                                        Comment

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