NM-B141 – Lenovo ThinkPad X1
The Lenovo ThinkPad X1 is built on the NM-B141 board designed by LCFC. The catalog lists 2 files for it: 1 BIOS file and 1 schematic.
Revisions seen in file names: 1.0 and 3.08. The BIOS dumps are 16 MB images. The earliest file dates from August 2021 (Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive).
BIOS dumps 1
Schematics 1
Board facts
| Board number | NM-B141 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-B |
| Revisions | 1.0, 3.08 |
| BIOS chip size | 16 MB |
| First seen | 2021-08-30 |
| 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. |
Laptops that use NM-B141
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 schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
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 |
Questions
Who designed the NM-B141 board?
NM-B141 is an LCFC board number used by Lenovo.
Which laptops use the NM-B141 board?
Files in the catalog link NM-B141 to the Lenovo ThinkPad X1.
Is there a boardview for NM-B141?
No boardview has been indexed for NM-B141 yet; the schematic is available on this page.
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.
What BIOS chip size does NM-B141 use?
The BIOS images for NM-B141 are 16 MB.
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.