12291-2 BIOS Dump
Part of 12291-2
12291-2: 9 BIOS files found in the source channels. The board is used in the Lenovo ThinkPad W541 and Lenovo ThinkPad W540. 7 of them are marked as tested by the uploader.
BIOS files 9
FileSizeRevAddedSource
From the uploader
THINKPAD W541 LKM-1 WS MB 12291-2 48.4L013.021 CPU i7 4710M SR17C G31428 N15P-Q1-A2
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.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .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 |