Macbook pro a1502 emc 2835 bios error

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  • Miiuser
    Member
    • Oct 2022
    • 16
    • USA
    #1

    Macbook pro a1502 emc 2835 bios error

    Hello when trying to flash bios to the motherboard I get Verification error on address: 0x00000010, Device: 0xFF, Buffer: 0x5A.
    Is there any way to fix this error?
    Also the computer will no longer boot.
    Attached Files

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    Tags: None
    • Miiuser
      Member
      • Oct 2022
      • 16
      • USA
      #2
      Re: Macbook pro a1502 emc 2835 bios error

      Any suggestions on how to fix?

        Comment

        • lilnhan
          New Member
          • Feb 2023
          • 3
          • United States
          #3
          Re: Macbook pro a1502 emc 2835 bios error

          I also have the same problem with this winbond chip. The error indicated the programmer didnt write the chip probably. Hence, your bios chip was corrupted. Therefore your computer won't able to turn it on. To fix it, you've to reflash the chip without any verification error. I'm also looking for a solution to reflash the chip without verification error. Did you flash via sam connector?

            Comment

            • Miiuser
              Member
              • Oct 2022
              • 16
              • USA
              #4
              Re: Macbook pro a1502 emc 2835 bios error

              Hello yes i flashed via the sam connector. I was able to flash the bios with no errors and the computer will not boot.

                Comment

                • lilnhan
                  New Member
                  • Feb 2023
                  • 3
                  • United States
                  #5
                  Re: Macbook pro a1502 emc 2835 bios error

                  which programmer did you use?

                    Comment

                    • Miiuser
                      Member
                      • Oct 2022
                      • 16
                      • USA
                      #6
                      Re: Macbook pro a1502 emc 2835 bios error

                      i used ch341a.
                      Any solutions for this or should i just use the laptop for parts?

                        Comment

                        • peste
                          Super Moderator
                          • Dec 2016
                          • 13759
                          • ROMANIA
                          #7
                          Re: Macbook pro a1502 emc 2835 bios error

                          Originally posted by Miiuser
                          i used ch341a.
                          Any solutions for this or should i just use the laptop for parts?
                          don't use the clip...it gives errors...remove the bios chip from the board before writing or reading...use these programs..
                          https://www.badcaps.net/forum/showpo...6&postcount=10
                          https://www.badcaps.net/forum/showpo...04&postcount=7
                          just for example..
                          https://www.youtube.com/watch?v=DWWigscuQDY
                          try this... if it doesn't work post the full name and model, EMC, serial number S/N, etc...
                          Attached Files

                          if you find these attachements useful please consider making a small donation to the site

                          Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

                          >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

                          Every donation made will go towards server fees and maintenance costs.

                            Comment

                            • lilnhan
                              New Member
                              • Feb 2023
                              • 3
                              • United States
                              #8
                              Re: Macbook pro a1502 emc 2835 bios error

                              Originally posted by peste
                              don't use the clip...it gives errors...remove the bios chip from the board before writing or reading...use these programs..
                              https://www.badcaps.net/forum/showpo...6&postcount=10
                              https://www.badcaps.net/forum/showpo...04&postcount=7
                              just for example..
                              https://www.youtube.com/watch?v=DWWigscuQDY
                              try this... if it doesn't work post the full name and model, EMC, serial number S/N, etc...
                              I've been using clip on macbook 2011 and 2012. it never give me problem. It's not possible to use clip on macbook 2013-2017. I highly recommend neogrammer over asprogrammer

                                Comment

                                • Miiuser
                                  Member
                                  • Oct 2022
                                  • 16
                                  • USA
                                  #9
                                  Re: Macbook pro a1502 emc 2835 bios error

                                  Originally posted by peste
                                  don't use the clip...it gives errors...remove the bios chip from the board before writing or reading...use these programs..
                                  https://www.badcaps.net/forum/showpo...6&postcount=10
                                  https://www.badcaps.net/forum/showpo...04&postcount=7
                                  just for example..
                                  https://www.youtube.com/watch?v=DWWigscuQDY
                                  try this... if it doesn't work post the full name and model, EMC, serial number S/N, etc...
                                  I use the socket on the motherboard to program the bios chip. I removed the bios from 9 macbook only this one gave me an error.

                                    Comment

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