NM-E691
The NM-E691 board comes from LCFC. 2 files are indexed for this board: 1 BIOS file, 1 boardview and 1 EC firmware image.
Revisions seen in file names: 1.0. BIOS images are 32 MB. The earliest file dates from May 2025 (Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive).
BIOS dumps 1
Boardviews 1
Board facts
| Board number | NM-E691 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-E |
| Revisions | 1.0 |
| BIOS chip size | 32 MB |
| First seen | 2025-05-15 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Archive |
| About the number | LCFC is Lenovo's joint venture with Compal; its main boards use NM- numbers and sub-boards NS- numbers. |
What these files are 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 boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
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 |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| .rar | RAR archive | 7-Zip or WinRAR |
| .tvw | Tebo-ICT .tvw boardview | FlexBV or Tebo-ICT View |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Is there a boardview for NM-E691?
Yes, 1 boardview file in .bdv and .tvw format.
What BIOS chip size does NM-E691 use?
The BIOS images for NM-E691 are 32 MB.
Who designed the NM-E691 board?
NM-E691 is an LCFC board number used by Lenovo.
Are these files free?
1 of the posts are marked VIP or paid in their source channel; the others are ordinary posts. ChambersDesignInc.com does not host or sell files.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.