Lenovo B71-80 NM-A491 Rev. 1.0 bios + ec
BIOSEC
4.0 MB · first posted in BIOS Archive
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Lenovo B71-80
NM-A491 rev. 1.0
CPU: SR2EY (Intel Core i5-6200U)
ITE IT8586E FXA
Bios + EC
What the file name tells us
| Brand | Lenovo |
|---|---|
| Model | Lenovo B71-80 |
| Board | NM-A491 |
| ODM | LCFC |
| Revision | 1.0 |
| Kind | BIOS, EC |
| Format | .zip |
| CPU | i5-6200U |
| Archive size | 4.0 MB |
| First posted | 2018-04-15 |
| Channel | BIOS Archive |
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.
EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.
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-A491
FileSizeRevAddedSource
LCFC NM-A491 BMWD1 r1.0 PDF
Schematic.pdf
2.0 MB
1.0
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LCFC NM-A491 (BDV)(.CAD)
Boardview.bdv.cad
222 KB
—
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