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Microsoft Surface Pro 7 NEED BIOS. HELP!

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    #21
    Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

    @Sakaan
    I may know where your problem is by looking at pictures.

    I've had a few programmers, PIN-1 on programmer ZIF socket is the one closest to LEVER, but in CH341A programmer there are some variants for PIN1 location depending on the chip you want to program (24Cxx eeprom or 25xx spi chip). When you want to program an SPI chip, PIN1 is located 4 rows below (on pin5), and have also seen PIN1 is located on the opposite corner from where the chip release lever is located.
    You already have this part working...

    The problem seems to be located in 1.8V adapter, the PIN1 is the one located closest to chip release lever, so just relocate adapter with ribbon cable four rows of pins above (next to lever).
    Take a look at this picture:




    The CH341A programmer with 1.8V adapter and the ribbon cable attached with SOP8 clip must look like this setup:




    I've taken the pictures from this other forum post (a very nice guide to CH341A programmer):
    https://winraid.level1techs.com/t/gu...rammer/32948/3
    Attached Files
    Last edited by SMDFlea; 05-07-2023, 05:11 AM. Reason: edited winraid link

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      #22
      Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

      Thank you so much. I am away for from home for couple of weeks. Will try once back home.

      Comment


        #23
        Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

        I'm having a similar issue, can't seem to get any programs to detect the 25R128JWPQ (W25R128JW?) correctly. I have a CH341a programmer with the 3.3v to 1.8v adapter, pins in the right spot, yet every program I've tried to use gives me garbage/random data whenever I try to read the chip.

        Makes you wonder how the OP managed to read the data correctly.

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          #24
          Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

          Originally posted by peste View Post
          try..
          Hi
          This file working fine I have tested and it does boot perfect without any password.

          Thank you

          Comment


            #25
            Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

            Originally posted by hamid_seta View Post
            Hi
            This file working fine I have tested and it does boot perfect without any password.

            Thank you
            Which programmer are you using?

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              #26
              Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

              helo every body!
              my laptop surface pro7 has "computrace", please help me remove
              thank you so much!
              Last edited by SMDFlea; 04-11-2023, 01:41 PM.
              ************************************************** ***********************************
              Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests
              all donations are welcome,
              see the donate button at the bottom of the page, or
              >>>>> click on this link to donate via PayPal. <<<<<
              Every donation made will go towards server fees and maintenance costs.
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                #27
                Microsoft Surface Pro 7 1866 BIOS request

                Hello

                Got a 1866 that turns on, windows logo, and off.

                Would like to reprogram bios.

                Anyone has a clean dump for this device?

                Appreciate it.

                Cheers!
                Last edited by magneh; 04-20-2022, 03:24 AM.

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                  #28
                  Re: Microsoft Surface Pro 7 1866 BIOS request

                  Originally posted by magneh View Post
                  Anyone has a clean dump for this device?
                  post your backup
                  All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

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                    #29
                    Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                    Heres the original dump

                    Bios IC

                    Winbond 25R128JW

                    Ive read the IC with my programmer, like a donk, without seeing the IC is 1.8V
                    its the file bkp.zip

                    Then I used a 1.8V adapter to read it, and I got different content on the bios file.
                    its the original.zip file

                    Did I screwed this up?
                    Always learning...
                    Attached Files
                    Last edited by magneh; 04-20-2022, 04:09 AM.

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                      #30
                      Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                      So yeah, I think I screwed up.

                      Flashed the dump of Peste post #8
                      Same thing.
                      logo comes up and goes away, just as before.

                      Poked around with multimeter, and found a shorted rail.
                      Tried my luck without screen connected and with thermal cam, found a cap heating up. removed it, and it was indeed shorted!
                      And guess what, surface turns on, and I got BIOS screen with Peste dump.

                      Now, I would like to keep the serial number and original dump.
                      Flashed both dumps I posted here, none of them work

                      Can someone help me inserting SN on Peste's working dump?
                      Or fix one of these files I uploaded?
                      SN of the device is 041644201153

                      Also, to replace this cap I must get the exact same one with same print?

                      NEh
                      jE8

                      Thanks for all the help!
                      Attached Files

                      Comment


                        #31
                        Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                        Originally posted by magneh View Post
                        So yeah, I think I screwed up.

                        Anyone?
                        Would love to keep a proper bios
                        Cheers
                        Last edited by SMDFlea; 04-21-2022, 03:48 AM.

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                          #32
                          Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                          Originally posted by magneh View Post
                          Anyone?
                          Would love to keep a proper bios
                          Cheers
                          try this one.
                          Last edited by SMDFlea; 04-11-2023, 01:41 PM.
                          All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

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                            #33
                            Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                            Originally posted by SMDFlea View Post
                            try this one.
                            Thanks for the reply SMDFlea!

                            Still not working, Device turns on , surface logo for 30 secs, goes off, and same thing again in a loop. nothing else happens

                            Also, with @peste Dump, touch does not work. I have Touch firmware 0.0.0.0 in UEFI screen (check 2nd photo on post #30).

                            What I cant understand is why the backups ive done neither work...very weird never had this problem before.

                            If someone could help with this issue, would be much appreciated !
                            Last edited by magneh; 04-21-2022, 06:04 AM.

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                              #34
                              Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                              Any bios expert with some minutes on the weekend to help me with this one?
                              Cheers!

                              Comment


                                #35
                                Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                                Originally posted by magneh View Post
                                Any bios expert with some minutes on the weekend to help me with this one?
                                Cheers!
                                Try
                                Last edited by SMDFlea; 04-11-2023, 01:41 PM.


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                                All donations to Badcaps are welcome.
                                Become a Badcaps supporter
                                >>>>> click on this link to donate <<<<<
                                Thanks to all supporters.
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                                  #36
                                  Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                                  Originally posted by hoaca388 View Post
                                  Try
                                  Thanks Hoaca.

                                  just tried it, device does the same as with my backups, surface logo for 3-4secs and goes off.
                                  If I press power button again, same thing

                                  Comment


                                    #37
                                    Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                                    Originally posted by magneh View Post
                                    Thanks Hoaca.

                                    just tried it, device does the same as with my backups, surface logo for 3-4secs and goes off.
                                    If I press power button again, same thing
                                    Try deleting ME that file and then flashing it again, if that fails check your hardware again. Maybe something was left behind.


                                    ----------------------------------------------------------------------------------------------------------------------------------------------------------
                                    All donations to Badcaps are welcome.
                                    Become a Badcaps supporter
                                    >>>>> click on this link to donate <<<<<
                                    Thanks to all supporters.
                                    ----------------------------------------------------------------------------------------------------------------------------------------------------------​

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                                      #38
                                      Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                                      Originally posted by hoaca388 View Post
                                      Try deleting ME that file and then flashing it again, if that fails check your hardware again. Maybe something was left behind.
                                      Well if I flash Peste bios, it works as you can see in the pics
                                      just no touch and serial is wrong

                                      You mean clean me your file?

                                      Not very bios savvy lol

                                      appreciate it

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                                        #39
                                        Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                                        Sorry to ask again, but can someone more experienced build a working bios for this device?

                                        Thank you!

                                        Comment


                                          #40
                                          Re: Microsoft Surface Pro 7 NEED BIOS. HELP!

                                          @magneh
                                          I've taken PESTE bios (post #8) and complemented it with your bios (bkp.zip, post #29), invalidated "SetOEMStrings" UEFI variable... but seen other Dfcixxxx UEFI variables too.
                                          If this bios works it will be your starting point, then you can take care of the MDM/DFCI.
                                          Attached Files
                                          Last edited by AAAC; 04-27-2022, 11:11 PM.

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