GS452 GS552 GS752 NM C781 REV 1 0 2019 11 25 WORKING BIOS & KBEC
BIOSECTested
7.5 MB · first posted in BIOS Archive
Get on TelegramWhat the file name tells us
| Brand | Lenovo |
|---|---|
| Model | Lenovo Yoga GS452 |
| Board | NM-C781 |
| ODM | LCFC |
| Revision | 1.0 |
| Kind | BIOS, EC |
| Format | .rar |
| Date in file name | 2019-11-25 |
| Archive size | 7.5 MB |
| First posted | 2022-07-17 |
| Channel | BIOS Archive |
| Notes | tested by uploader |
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 |
|---|---|---|
| .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-C781
FileSizeRevAddedSource
GS452 GS552 GS752 NM-C781 (REV 1.0) (BDV)
Boardview.bdv
2.1 MB
1.0
Get on Telegram Schematics & Boardviews Archive
GS452 GS552 GS752 NM-C781 (REV 1.0) (BDV)(.TVW)
Boardview.bdv.tvw
879 KB
1.0
Get on Telegram Schematics & Boardviews Archive