NM-E591 – Lenovo JS47B
The Lenovo JS47B is built on the NM-E591 board designed by LCFC. ChambersDesignInc.com has indexed 3 files for this board — 2 BIOS files and 1 boardview.
File names mention revision 1.0. The BIOS dumps are 32 MB images. First posted in July 2026 in BIOS Archive and Schematics & Boardviews Archive.
BIOS dumps 2
Boardviews 1
Board facts
| Board number | NM-E591 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-E |
| Revisions | 1.0 |
| BIOS chip size | 32 MB |
| First seen | 2026-07-30 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive |
| About the number | LCFC is Lenovo's joint venture with Compal; its main boards use NM- numbers and sub-boards NS- numbers. |
Laptops that use NM-E591
- Lenovo JS47B
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.
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
Who designed the NM-E591 board?
NM-E591 is an LCFC board number used by Lenovo.
Which laptops use the NM-E591 board?
Files in the catalog link NM-E591 to the Lenovo JS47B.
Is there a boardview for NM-E591?
Yes, 1 boardview file in .bdv and .tvw format.
What BIOS chip size does NM-E591 use?
The BIOS images for NM-E591 are 32 MB.
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.