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Apple A1418 820-00431 BIOS

BIOS 820-00431 Added: Dec 13, 2023 RAR · 6.2 MB

File details

TypeBIOS
BrandApple
ModelA1418
Board number820-00431
Board maker (ODM)Apple
DeviceLaptop
FormatRAR
Size6.2 MB
Markstested by uploader
AddedDecember 13, 2023
Updated
Original file nameMACKBOOK_A1418_CPU_i5_5575R_820_00431_A_2013_21_5_WORKING_BIOS_100%.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

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

From the original post:
MACKBOOK A1418 CPU i5 5575R 820-00431-A 2013 21.5 WORKING BIOS 100%

BIOS dump for the Apple A1418 laptop, board number 820-00431, supplied as a RAR archive of about 6.2 MB and marked as tested by the uploader. The file name also refers to a 21.5-inch model from 2013 with an i5-5575R processor, but those details are only in the title, so confirm them against your unit before flashing. A BIOS dump like this is used to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update.

The catalog also lists 1 schematic, 1 boardview file, and 2 BIOS dumps for board 820-00431.

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 A1418 820-00431. 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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