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Lenovo Thinkpad Ec Pwd Bypass

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    Cliquez sur l'image pour la voir en taille r?elle   Nom : 		image.png  Affichages :	0  Taille :		261,6 Ko  ID : 			3342927
    NM-B461
    pin 7/8/9/10

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      Hi Maxpower3 ,

      First of all thank you for your great work!

      I'm trying to remove the BIOS password from my p14s gen 4 amd (21K5), would the method described work on this model?
      I'm trying to locate the EC on the motherboard but can't find it, would you have any information on the EC location or how to access the LPC bus?

      Comment


        Hello friend
        Maxpower3 I am immensely grateful for your collaboration with the community, your knowledge and study have certainly helped a lot of people here. I would like to know if there is any news or any evolution in relation to the T14 Gen2 MEC1503

        Comment



          hach
          santoslao
          Hello.
          Both of you must find schematics and search for words "LAD" and "eSPI"
          If you found "LAD" is possible
          If you found "eSPI" is not possible.


          Comment


            Originally posted by Andreasbest View Post
            hach
            santoslao
            Hello.
            Both of you must find schematics and search for words "LAD" and "eSPI"
            If you found "LAD" is possible
            If you found "eSPI" is not possible.

            Thank you for these ways, but unfortunately t14 gen2 only has eSPI in its scheme. The fact is that there are people who do this unlocking but are keeping the seven keys, they don't sell and also don't contribute with the information, I've already taken more than 10 pieces of equipment of this model and dismissed it for not having a solution for them, and giving it as scrap. Right here in the forum there are people who say they managed to solve it but don't pass on the information.

            Comment


              Well it's known that it can be done but with programmer.
              If you have many Lenovo with eSPI then it's worth it to buy a SVOD programmer and do it your self.

              Comment


                Originally posted by santoslao View Post

                Thank you for these ways, but unfortunately t14 gen2 only has eSPI in its scheme. The fact is that there are people who do this unlocking but are keeping the seven keys, they don't sell and also don't contribute with the information, I've already taken more than 10 pieces of equipment of this model and dismissed it for not having a solution for them, and giving it as scrap. Right here in the forum there are people who say they managed to solve it but don't pass on the information.
                https://www.badcaps.net/forum/troubl...15#post3238715
                work on amd (tested ok) but no intel

                t14 gen3 amd not work
                https://www.badcaps.net/forum/troubl...32#post3279732
                Last edited by Maxpower3; 09-13-2024, 01:39 AM.

                Comment


                  Originally posted by Maxpower3 View Post

                  edit
                  after many try
                  I managed to enter the bios, but the tabs are missing.
                  Click image for larger version  Name:	441499388_881095270699214_2116687842734834106_n.jpg Views:	1250 Size:	363.5 KB ID:	3279733 Click image for larger version  Name:	441409609_1406188906766540_432083223838718957_n.jpg Views:	1050 Size:	336.0 KB ID:	3279734
                  The Espi connector is not connected, the resistors are missing
                  Click image for larger version  Name:	436069011_1692389747833736_4228328836113742636_n.jpg Views:	830 Size:	701.1 KB ID:	3279735
                  so it must be connected near the EC
                  Click image for larger version  Name:	NM-E441.png Views:	831 Size:	401.8 KB ID:	3279736
                  I have to start very early to pass, well before backlighting.
                  I have not yet fully understood how.
                  I also managed to get errors like uuid or others


                  not yet able to remove the password



                  ON T480s 1.13 that i had missing tabs and UUID errors i managed to get all tabs with glitch right before lenovo logo and probably some milliseconds with logo too.
                  Early glitch gave me exactly these errors.
                  Try this way, very interesting case.

                  Update:now that i remember details, i never managed to trigger the glitch with 1.13 so i updated to next version of bios. Try next version too and try the way i wrote
                  Last edited by Andreasbest; 09-13-2024, 04:07 AM.

                  Comment


                    What i know is MEC 1505 doesnt support any programmers

                    Comment


                      Originally posted by ibo View Post
                      What i know is MEC 1505 doesnt support any programmers
                      Some people claim to have unlocked it. Until then it's a mystery, because I've heard that some can do it, but they're keeping this "big secret" under 7 keys,They say they are afraid of spreading everywhere.
                      PS: as if all mec1503 machines only exist for them.

                      Comment


                        Originally posted by santoslao View Post
                        Hello friend
                        Maxpower3 I am immensely grateful for your collaboration with the community, your knowledge and study have certainly helped a lot of people here. I would like to know if there is any news or any evolution in relation to the T14 Gen2 MEC1503

                        It's PROGRAMMBLE but MEC1503 SRAM-based nature. It's not a rom. So you can't program from programmer. Mec1503 collect data from main bios when power on. • SRAM is volatile memory, which means it does not retain data when the power is turned off.

                        Comment


                          Originally posted by azanwaqas771 View Post


                          It's PROGRAMMBLE but MEC1503 SRAM-based nature. It's not a rom. So you can't program from programmer. Mec1503 collect data from main bios when power on. • SRAM is volatile memory, which means it does not retain data when the power is turned off.
                          Your explanation is very good, so will changing the mec1503 chip resolve the blockage? I saw some selling on aliE.

                          Comment


                            Originally posted by azanwaqas771 View Post


                            It's PROGRAMMBLE but MEC1503 SRAM-based nature. It's not a rom. So you can't program from programmer. Mec1503 collect data from main bios when power on. • SRAM is volatile memory, which means it does not retain data when the power is turned off.
                            So how we can unlcock then?

                            Comment


                              If there is no data after a reset or power off, it must be in the BIOS but there is an integrity check??
                              Last edited by Maxpower3; 09-13-2024, 11:02 AM.

                              Comment


                                Originally posted by azanwaqas771 View Post


                                It's PROGRAMMBLE but MEC1503 SRAM-based nature. It's not a rom. So you can't program from programmer. Mec1503 collect data from main bios when power on. • SRAM is volatile memory, which means it does not retain data when the power is turned off.
                                proof?

                                Comment


                                  Until then, each one speculates a type of theory, the fact is that it came from the factory and it was programmed. There are people who are managing to unlock these machines with MEC1503, but they keep this secret at 7 keys as I said before.

                                  Comment


                                    Originally posted by santoslao View Post
                                    Until then, each one speculates a type of theory, the fact is that it came from the factory and it was programmed. There are people who are managing to unlock these machines with MEC1503, but they keep this secret at 7 keys as I said before.
                                    it's not me ​

                                    Originally posted by rediii View Post

                                    proof?

                                    https://www.badcaps.net/forum/troubl...39#post1867039
                                    Last edited by Maxpower3; 09-15-2024, 11:55 AM.

                                    Comment


                                      Originally posted by Maxpower3 View Post
                                      this is no proof for me, sry. i doubt it. i once went to the trouble of unlocking a locked t15 g2 by replacing the mec1503.

                                      Comment


                                        Originally posted by rediii View Post

                                        this is no proof for me, sry. i doubt it. i once went to the trouble of unlocking a locked t15 g2 by replacing the mec1503.
                                        for more info that's all, I don't know anything about it.
                                        I just know about short circuits​

                                        Comment


                                          Originally posted by Maxpower3 View Post

                                          for more info that's all, I don't know anything about it.
                                          I just know about short circuits​
                                          you are doin‘ a good job for the whole community.

                                          Comment

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