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Apple MacBook Pro A1286 820-2850 BIOS

BIOS 820-2850 Added: Mar 31, 2021 ZIP · 2 MB

File details

TypeBIOS
BrandApple
ModelMacBook Pro A1286
Board number820-2850
Board maker (ODM)Apple
DeviceLaptop
FormatZIP
Size2 MB
Marksclean ME
AddedMarch 31, 2021
Updated
Original file nameMACBOOK PRO A1286 MLB 820-2850-A OK CLEAR ME.zip

Where to get the file

Opens the matching file on RM Schematics, or its source details if it is not catalogued there yet.

Alternative links

No other copies are known yet.

AwesomeHeader does not store this file. It was published in a public Telegram channel; the links above lead to the original post and its copies.

Description

BIOS dump for the Apple MacBook Pro A1286, board number 820-2850, supplied as a ZIP archive of about 2 MB and marked as having the Intel ME region cleaned. Technicians use a dump like this to reprogram the SPI flash chip with a programmer after BIOS corruption or a failed update. Before flashing, confirm that the board number and revision on your logic board match the file, and back up the original chip contents so you can restore them if needed.

The catalog also lists 2 schematics, 2 boardview files, and 5 BIOS dumps for board 820-2850.

Description generated from the catalog data. ·

How to open it

A BIOS dump is written to the SPI flash chip with a programmer such as the CH341A and a SOIC8 clip. Read and save the original chip contents twice before writing.

Guide: Flash a Laptop BIOS with a CH341A Programmer →

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Questions about this file

How do I flash this BIOS dump?

Write it to the SPI flash chip with a programmer such as the CH341A and a SOIC8 clip. Read and keep the original contents first, and check that the chip size matches the dump.

Will this BIOS work on my board?

Only if the board number and revision match: Apple MacBook Pro A1286 820-2850. Dumps from a different board or revision can leave the board dead.

What does “clean ME” mean?

The Intel ME region in the dump has been reset, so it can be used on another board of the same model. Keep your original dump and transfer serial numbers if needed.

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