DG421 DG521 DG721 NM-B241 (REV 1.0) CLEAR ME
BIOSClean ME
4.9 MB · first posted in BIOS Archive
Get on TelegramWhat the file name tells us
| Brand | Lenovo |
|---|---|
| Model | Lenovo IdeaPad DG421 |
| Model | Lenovo IdeaPad DG521 |
| Model | Lenovo IdeaPad DG721 |
| Board | NM-B241 |
| ODM | LCFC |
| Revision | 1.0 |
| Kind | BIOS, ME region |
| Format | .rar |
| Archive size | 4.9 MB |
| First posted | 2021-07-18 |
| 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 |
Other files for NM-B241
FileSizeRevAddedSource
NM-B241 DG421 DG521 DG721 REV 1.0 R10 tvw BDV
Boardview.tvw.bdv
2.0 MB
1.0
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