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Apple 820-2914 BIOS

BIOS 820-2914 Added: Oct 26, 2020 RAR · 3.8 MB

File details

TypeBIOS
BrandApple
Board number820-2914
Board maker (ODM)Apple
DeviceLaptop
FormatRAR
Size3.8 MB
AddedOctober 26, 2020
Updated
Original file name820-2914-A DF92 MC725LLA.rar

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

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 an Apple laptop, board number 820-2914, supplied as a RAR archive of about 3.8 MB under the original file name 820-2914-A DF92 MC725LLA.rar. Technicians use a dump like this to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update. Before writing anything, confirm that the board number and revision on your logic board match the file, and read out and save the original chip contents as a backup.

The catalog also lists 2 schematics, 1 boardview file, and 2 BIOS dumps for board 820-2914.

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 820-2914. 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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