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Apple A1278 BIOS

BIOS Added: Dec 28, 2021 RAR · 3.9 MB

File details

TypeBIOS
BrandApple
ModelA1278
DeviceLaptop
FormatRAR
Size3.9 MB
AddedDecember 28, 2021
Updated
Original file nameMAC BOOKPRO A1278 820-3115B BIOS BION .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

BIOS dump for the Apple A1278 laptop, shared as a RAR archive of about 3.9 MB under the file name "MAC BOOKPRO A1278 820-3115B BIOS BION .rar". The file name points to board number 820-3115B, so compare it against the logic board you are working on before using the dump. Technicians use BIOS dumps like this to reprogram the SPI flash chip with a programmer after corruption or a failed firmware update. Read and back up the original chip contents first, so you can restore them if the new write does not behave as expected.

For the Apple A1278 the catalog also has 13 schematics, 8 boardview files, and 18 BIOS dumps.

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 A1278. 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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