820-00687-A

Discussion in 'BIOS/UEFI' started by technical, Jan 13, 2018.

820-00687-A 5 5 1votes
5/5, 1 vote

Page 2 of 2
  1. krjavi

    krjavi New Member

    Joined:
    Feb 8, 2016
    Messages:
    11
    Likes Received:
    0
    Can I use 820-687-a file on a 820-687-b board?
     
    #21 krjavi, Jul 18, 2019
  2. technical

    technical Moderator Staff Member

    Joined:
    Dec 13, 2013
    Messages:
    64,627
    Likes Received:
    4,729
    yes, can
     
    #22 technical, Jul 18, 2019
  3. krjavi

    krjavi New Member

    Joined:
    Feb 8, 2016
    Messages:
    11
    Likes Received:
    0
    I used the file 820-687-a on my 820-687-b board and it turns on very very slow.
     
    #23 krjavi, Jul 19, 2019
  4. chipmunk

    chipmunk Well-Known Member

    Joined:
    Sep 23, 2014
    Messages:
    27
    Likes Received:
    1
    Use Medusa to clean ME, after that it will work.
     
    #24 chipmunk, Jul 20, 2019
  5. Sebb

    Sebb Well-Known Member

    Joined:
    Mar 31, 2016
    Messages:
    8
    Likes Received:
    2
    Hi ThienBui,

    The bios that you posted is it a clean dump one?
    If not, is it possible to send you my bios bin and clean it up for me, please?
    Thanks.
     
    #25 Sebb, Jul 23, 2019
  6. technical

    technical Moderator Staff Member

    Joined:
    Dec 13, 2013
    Messages:
    64,627
    Likes Received:
    4,729
    yes, buy one VIP and get support
    Account Upgrades
     
    #26 technical, Jul 23, 2019
  7. technical

    technical Moderator Staff Member

    Joined:
    Dec 13, 2013
    Messages:
    64,627
    Likes Received:
    4,729
     

    Attached Files:

    • Love Love x 1
    #27 technical, Jul 23, 2019
  8. Sebb

    Sebb Well-Known Member

    Joined:
    Mar 31, 2016
    Messages:
    8
    Likes Received:
    2
    ThienBui, you are amazing!
    All worked perfectly fine.
    Thanks again friend!
     
    #28 Sebb, Jul 23, 2019
  9. Sebb

    Sebb Well-Known Member

    Joined:
    Mar 31, 2016
    Messages:
    8
    Likes Received:
    2
    Everyone who is using EFI BIOS SPI flex cable (without removing the chip from the board), make sure that the cable is making a good connectivity between pins and the programmer.
    It happened in my case to not be able to read or write.
    Just find the right orientation/position.
    And also, after the whole process, make sure that you reset the nvram for 2-3 times, because some times pieces of information gets stuck and it acts weird (boot loops, black screen, stuck on logo, starts very slow) and this might fix.
    In rest, good luck guys!
     
    #29 Sebb, Jul 23, 2019
    Last edited: Jul 23, 2019
(You must log in or sign up to post here.)
Page 2 of 2
Loading...
Similar Threads - 00687 Forum Date
Apple Logic Board 820-00687 Bios BIOS/UEFI Jan 13, 2018
Tags:
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Accept Learn More...
    Dismiss Notice