820-2530-A

BIOS

1.3 MB · first posted 2018-12-19 in BIOS Archive

What the file name tells us

Brand	Apple
Board	820-2530
Revision	A
Kind	BIOS
Format	.rar, .zip
Archive size	1.3 MB
First posted	2018-12-19
Channel	BIOS Archive

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

Same file in other posts

Channel	Posted	Size	Link
BIOS Archive	2018-12-19	1.3 MB	Open post
BIOS Archive	2020-11-17	1.4 MB	Open post

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
.rar	RAR archive	7-Zip or WinRAR
.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