Need Help A1286 2012 EMC 2556 bios password

[myjunaid]

820-3330-B
Hi Can anyone help me out to remove the password from this bios dump file
Thanks in advance
Macbook pro
A1286
2012

[peste]

Re: Need Help A1286 2012 EMC 2556 bios password

820-3330-B
Hi Can anyone help me out to remove the password from this bios dump file
Thanks in advance
Macbook pro
A1286
2012

the bios is incomplete ... it must have 8MB ... read the bios chip several times, use the HxD program and compare the copies..and if you have two similar copies, post here ..

[myjunaid]

Re: Need Help A1286 2012 EMC 2556 bios password

i tried 3 times and everytime i read it gives me only 128kb
i am using CH341A
you can also see the picture of the bios in the zip file
can you please guide me what i am doing wrong

[myjunaid]

Re: Need Help A1286 2012 EMC 2556 bios password

the bios is incomplete ... it must have 8MB ... read the bios chip several times, use the HxD program and compare the copies..and if you have two similar copies, post here ..

Everytime i read it gives me same size i have read 3 times also you can see the picture of the bios chip and the programmer in the zip file

[piernov]

Re: Need Help A1286 2012 EMC 2556 bios password

If you don't select the correct chip in the programmer software it won't work.

[myjunaid]

Re: Need Help A1286 2012 EMC 2556 bios password

i have tried reading the chip by changing the manu to Winboard and 1 time i read with w25q64bv it gave me 8mb file and 2nd time i read w25q128bv and it gave me 16mb file
let me know if i m doing something wrong

[myjunaid]

Re: Need Help A1286 2012 EMC 2556 bios password

the bios is incomplete ... it must have 8MB ... read the bios chip several times, use the HxD program and compare the copies..and if you have two similar copies, post here ..

If you don't select the correct chip in the programmer software it won't work.

i have my bios picture on my zip file can you guide me the proper setting to read that chip
thank you for help

[SMDFlea]

Re: Need Help A1286 2012 EMC 2556 bios password

Try NeoProgrammer and ASProgrammer software.You can make a backup with each one and then compare the files with a hex editor to make sure both are the same.Or make 2 backups using the same software and compare both.If they are the same post your backup.

https://www.badcaps.net/forum/showpo...04&postcount=7

https://www.badcaps.net/forum/showpo...6&postcount=10

[peste]

Re: Need Help A1286 2012 EMC 2556 bios password

i have my bios picture on my zip file can you guide me the proper setting to read that chip
thank you for help

the 8MB bios seems ok ... look in the programmer's software, what is written on the bios chip and select ... if you can't find it, try to enter it manually ... use this program..https://www.badcaps.net/forum/showpo...unt=10...other users have succeeded with it ...

[myjunaid]

Re: Need Help A1286 2012 EMC 2556 bios password

Try NeoProgrammer and ASProgrammer software.You can make a backup with each one and then compare the files with a hex editor to make sure both are the same.Or make 2 backups using the same software and compare both.If they are the same post your backup.

https://www.badcaps.net/forum/showpo...04&postcount=7

https://www.badcaps.net/forum/showpo...6&postcount=10

Thank you for the softwares yes my Programmer was detecting wrong chip
i have read the file with neo programmer and the as programmer
both files attached now with their pictures and now i can also find $SVS
you can check and if possible clear the efi lock for me will appreciate

[myjunaid]

Re: Need Help A1286 2012 EMC 2556 bios password

the 8MB bios seems ok ... look in the programmer's software, what is written on the bios chip and select ... if you can't find it, try to enter it manually ... use this program..https://www.badcaps.net/forum/showpo...unt=10...other users have succeeded with it ...

please check my last message i have read the file from 2 different programmer have a look i think now its fine

i remember you helped me out long time ago in my Hp bios for that Thank you very much

[peste]

Re: Need Help A1286 2012 EMC 2556 bios password

please check my last message i have read the file from 2 different programmer have a look i think now its fine

i remember you helped me out long time ago in my Hp bios for that Thank you very much

you have the bios at post # 9

[myjunaid]

Re: Need Help A1286 2012 EMC 2556 bios password

Thank you very much it worked

[pankajis2005]

Re: Need Help A1286 2012 EMC 2556 bios password

Can you help he to clear (unlock) the firmware password

[ranzoo]

Mackbook pro A1286 EMC 2556

Macbook pro a1286 Motherboard number: 820-3330

eeprom : 25L6406E

EFI UNLOCK /FILE TEST