ideapad EG521 EG522 EZ511 EG721 NM-B452 REV 1.0 CLEAR ME
BIOSTestedClean ME
5.1 MB · first posted in BIOS Archive
Get on TelegramUploader's description
520-15IKB EG521 EG522 EZ511 EG721 NM-B452 REV 1.0 2017.07.03 TESTED OK
What the file name tells us
| Brand | Lenovo |
|---|---|
| Model | Lenovo IdeaPad EG521 |
| Model | Lenovo IdeaPad EG522 |
| Board | NM-B452 |
| ODM project | EZ511, EG721 |
| ODM | LCFC |
| Revision | 1.0 |
| Kind | BIOS, ME region |
| Format | .zip |
| Archive size | 5.1 MB |
| First posted | 2021-04-25 |
| Channel | BIOS Archive |
| Notes | tested by uploader, 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 |
|---|---|---|
| .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 |
Other files for NM-B452
FileSizeRevAddedSource
EG521 EG522 MB Kabylake-U42 NM B452 REV0.2 pdf
Schematic.pdf
2.6 MB
0.2
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