BIOS A1466 i5-4250U 820-3437-B

BIOS
4.0 MB · first posted in BIOS Archive
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What the file name tells us

BrandApple
ModelApple A1466
Board820-3437
RevisionB
KindBIOS
Format.rar
CPUi5-4250U
Archive size4.0 MB
First posted2021-06-06
ChannelBIOS 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

FormatWhat it isOpen with
.rarRAR archive7-Zip or WinRAR
.binBIOS image inside the archive (usually .bin)a CH341A, XGecu T48 / TL866II Plus or RT809H programmer

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