820-2828 BIOS Dump 8MB
Part of 820-2828
This page collects 4 BIOS files for 820-2828. The board is used in the Apple A1312. Image size: 8 MB. Flash chip noted in the file names: 25L6406E and MX25L6406E. 2 of them are marked as tested by the uploader. Board revisions: A.
BIOS files 4
FileSizeRevAddedSource
apple iMac 27 A1312 820-2828-A MX25L6406E TESTED OK
BIOS8 MBTested
3.5 MB
A
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IMACK 27 A1312 820-2828-A MX25L6406E WORKING BIOS 100%
BIOS8 MBTested
3.4 MB
A
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Laptops that use 820-2828
What these files are 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 |