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Apple iMac A1419 820-00609 BIOS

BIOS 820-00609 Added: Aug 29, 2022 ZIP · 5 MB

File details

TypeBIOS
BrandApple
ModeliMac A1419
Board number820-00609
Board maker (ODM)Apple
DeviceLaptop
FormatZIP
Size5 MB
Marksclean ME
AddedAugust 29, 2022
Updated
Original file nameIMAC A1419 820-00609-A ME REGION OK.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

From the original post:
IMAC A1419 820-00609-A ME REGION OK

BIOS dump for the Apple iMac A1419, board number 820-00609, supplied as a 5.0 MB ZIP archive. The file is marked clean ME, meaning the ME region has been reset. Technicians use a BIOS dump like this to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update. The original file name carries the suffix -A on the board number, so check that the board number and revision on your own board match before flashing, and back up the original chip contents first.

For board 820-00609 the catalog also has 1 schematic and 2 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 iMac A1419 820-00609. 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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