iMac A1419 820-00134-A

BIOS

4.6 MB · first posted 2021-06-06 in BIOS Archive

What the file name tells us

Brand	Apple
Model	Apple A1419
Board	820-00134
Revision	A
Kind	BIOS
Format	.zip
Archive size	4.6 MB
First posted	2021-06-06
Channel	BIOS Archive

Parsed automatically from the file name and caption. Always compare the board number with the one printed on your board.

What this kind of file is for

A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.

Tools to open these files

Format	What it is	Open with
.zip	ZIP archive	7-Zip, WinRAR or the built-in Windows extractor
.bin	BIOS image inside the archive (usually .bin)	a CH341A, XGecu T48 / TL866II Plus or RT809H programmer