12291-2 – Lenovo ThinkPad W541
The 12291-2 (Wistron) motherboard is found in the Lenovo ThinkPad W541 and Lenovo ThinkPad W540. The catalog lists 10 files for it: 9 BIOS files and 1 boardview.
First posted in March 2019 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 9
Boardviews 1
From the uploader
THINKPAD W541 LKM-1 WS MB 12291-2 48.4L013.021 CPU i7 4710M SR17C G31428 N15P-Q1-A2
Board facts
| Board number | 12291-2 |
|---|---|
| Designed by | Wistron |
| Platform group | 12XXX |
| Also known as | 48.4L013.021, 48.4LO13.021, 48.4LO14.021 |
| CPU generation | Intel 4th gen |
| First seen | 2019-03-16 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use 12291-2
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 |
| .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 |
Questions
Is there a boardview for 12291-2?
Yes, 1 boardview file in .bdv format.
Who designed the 12291-2 board?
12291-2 is a Wistron board number used by Lenovo.
Which laptops use the 12291-2 board?
Files in the catalog link 12291-2 to the Lenovo ThinkPad W541 and Lenovo ThinkPad W540.
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.