820-4668-A WORKING BIOS 100%
BIOSTested
7.1 MB · first posted in BIOS Archive
Get on TelegramWhat the file name tells us
| Brand | Apple |
|---|---|
| Board | 820-4668 |
| Revision | A |
| Kind | BIOS |
| Format | .rar |
| Archive size | 7.1 MB |
| First posted | 2023-05-29 |
| Channel | BIOS Archive |
| Notes | tested by uploader |
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 |
|---|---|---|
| .rar | RAR archive | 7-Zip or WinRAR |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Other files for 820-4668
FileSizeRevAddedSource
A1418 iMac 21.5-inch, Mid2014 820-4668-A PDF
Schematic.pdf
1.4 MB
A
Get on Telegram Schematics & Boardviews Archive +1 more