820-00928-A W25Q64BV
BIOS8 MB
4.3 MB · first posted in BIOS Archive
Get on TelegramWhat the file name tells us
| Brand | Apple |
|---|---|
| Board | 820-00928 |
| Revision | A |
| Kind | BIOS |
| Format | .rar |
| Chip size | 8 MB |
| Flash chip | W25Q64BV |
| Archive size | 4.3 MB |
| First posted | 2019-09-23 |
| 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 | 2019-09-23 | 4.3 MB | Open post |
| BIOS Archive | 2020-06-20 | 4.3 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 |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
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