MacBook Pro A1502 (820-3476-A) password

[master_clone33]

Re: MacBook Pro A1502 (820-3476-A) password

Hello Peste, heres the original file i got.. only problem is that when i read and saved the original, i used SOP8 instead of WSON8... hope it could still work.

Thank you.

[peste]

Re: MacBook Pro A1502 (820-3476-A) password

Hello Peste, heres the original file i got.. only problem is that when i read and saved the original, i used SOP8 instead of WSON8... hope it could still work.

Thank you.

the password is deleted..if the bios is ok and you write without errors it should work...don't forget the PRAM reset..

[ajbernasko]

Re: MacBook Pro A1502 (820-3476-A) password

Please I have A1502 emc 2678 board number 820-3476-A, does not show ssd in diskutil list command, but can boot with windows maybe there's an error somewhere please help me. chip is N25Q064A

[ajbernasko]

Re: MacBook Pro A1502 (820-3476-A) password

please can someone help me you clean this file above for me ? Thank you

[mrwab]

Re: MacBook Pro A1502 (820-3476-A) password

please can someone help me you clean this file above for me ? Thank you

try and replay

[ajbernasko]

Re: MacBook Pro A1502 (820-3476-A) password

try and replay

okay, my programmer cannot write this files, keeps giving me same address error 10h, even the back up file gives me same error. can I use any other like the SOP8 200mil with 64MB at 1.8V to write this file ?

[ajbernasko]

Re: MacBook Pro A1502 (820-3476-A) password

okay, my programmer cannot write this files, keeps giving me same address error 10h, even the back up file gives me same error. can I use any other like the SOP8 200mil with 64MB at 1.8V to write this file ?

Hi I was able to write the file but it is boot looping no post

[ajbernasko]

Re: MacBook Pro A1502 (820-3476-A) password

Please what do I need to know? I wrote new firmware for this macbook with board number 820-3476-a and gave me no image no cpu voltage, now i am trying to write back the old file and still give me no image no cpu volts as well

[ahmarzo]

macbook a1502 password reset

please remove password from my backup macbook pro a1502 emc 2875 motherboard part number 820-3476-A.

[piszpunta]

Re: MacBook Pro A1502 (820-3476-A) password

Try

[ahmarzo]

Re: MacBook Pro A1502 (820-3476-A) password

not working shows on battery charging icon when power button is pressed but not booting.

[peste]

Re: macbook a1502 password reset

please remove password from my backup macbook pro a1502 emc 2875 motherboard part number 820-3476-A.

try..

[gokhan312]

THERE IS A PASSWORD WHEN OPENING UP. CAN ANYONE HELP ME REMOVE IT? PLEASE HELP

[SMDFlea]

THERE IS A PASSWORD WHEN OPENING UP. CAN ANYONE HELP ME REMOVE IT? PLEASE HELP

Don`t post in ALL CAPS please.Post the serial number as per the rules.

RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...before-posting

You MUST:

• Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.

[waseem nuaman]

Hi good evening friends can someone remove password of MacBook a1502 please thanks

[waseem nuaman]

here is old bios with password

[peste]

here is old bios with password

post S/N, EMC, motherboard model, etc.

[waseem nuaman]

S/no: C02P4AVWG3QJ

[farouk_1994]

S/no: C02P4AVWG3QJ

After reprogramme your chip press Alt+Command+P+R+powerbotton until it's reboot in order to reset Nvram

[SMDFlea]

After reprogramme your chip press Alt+Command+P+R+powerbotton until it's reboot in order to reset Nvram

The serial number in the bios you posted is different, yours is C02P4AVWG3FK , it should beC02P4AVWG3QJ

Use MacEfiToolkit to change it with software https://github.com/MuertoGB/MacEfiToolkit or watch piernovs video and edit with a hex editor.

https://www.badcaps.net/forum/troubl...24#post1622424
4.3. Apple
For 2017 and older machines, serial number is stored in Fsys store of BIOS and can be edited with hexadecimal editor. Fsys checksum needs to be fixed afterwards
Search for "ssn", edit the serial number, save, open dump in UEFITool, go to the Fsys store and write down the suggested checksum in the panel on the right. Checksum is 4 bytes at the end of the Fsys store, between one zone of 0x00 either Gaid or another zone of 0xFF, it must be written in reverse order (so last 2 characters from UEFITool must be written first).
See: https://www.youtube.com/watch?v=poA8HByYqTM