NM-B931 BIOS Dump
Part of NM-B931
9 BIOS files for NM-B931 are indexed here. The board is used in the Lenovo ThinkPad L490 and Lenovo ThinkPad L590. Image size: 1 MB or 32 MB. 2 of them are marked as tested by the uploader. 1 has a cleaned Intel ME region. Board revisions: 1.0. 2 are VIP/paid posts in the source channel.
BIOS files 9
FileSizeRevAddedSource
FL90 FL590 NM-B931 REV 1.0 2019-03-15 32MB CLEAN ME BIOS
BIOS32 MBClean MEVIP
17.6 MB
1.0
Get on Telegram BIOS Archive
FL490 FL590 NM B931 REV 1 0 2019 03 15 BIOS & EC 32MB & 1MB WORKING
BIOSEC1 MB, 32 MBTested
14.8 MB
1.0
Get on Telegram BIOS Archive
From the uploader
LENOVO THINKPAD L590 (type 20Q7, 20Q8) FL490 FL590 NM-B931 REV 1.0 2019-03-15 R0ZET35W 32MB
Laptops that use NM-B931
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 |