A1534 EMC 3099 820-00045-A MacBook 12 2017 Clear me
BIOSClean ME
4.1 MB · first posted in BIOS Archive
Get on TelegramWhat the file name tells us
| Brand | Apple |
|---|---|
| Model | Apple A1534 |
| Board | 820-00045 |
| Revision | A |
| Kind | BIOS, ME region |
| Format | .rar |
| Archive size | 4.1 MB |
| First posted | 2021-01-27 |
| Channel | BIOS Archive |
| Notes | ME region cleaned |
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.
A 'clean ME' image has the Intel Management Engine region reset, so the dump can be moved to another board of the same model; the board's own serial and DMI data still need to be restored.
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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