NM-B901 BIOS Dump 32MB
Part of NM-B901
10 BIOS files for NM-B901 are indexed here. The board is used in the Lenovo ThinkPad FT490, Lenovo ThinkPad FT492, Lenovo ThinkPad T490 and Lenovo ThinkPad T590. Image size: 32 MB. Flash chip noted in the file names: W25Q256FV. The uploader marked 4 as tested/working. 1 has a cleaned Intel ME region. Board revisions: 1.0 and 0.3.
BIOS files 10
FileSizeRevAddedSource
FT490 FT590 NM-B901 REV 0.3 2018-07-23 32MB OKOK
BIOS32 MBTested
28.9 MB
0.3
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FT490 FT492 FT590 FT591 NM-B901 W25Q256FV TESTED OK
BIOS32 MBTested
12.2 MB
—
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From the uploader
LENOVO T590 FT490 FT492 FT590 FP531 NM-B901 REV 1.0 2018-12-29 N17S-G2-A1 SREJP CPU i7-8565U WORKING 100%
LENOVO THINKPAD T490 T590 FT490 FT492 FT590 FP531 NM-B901 REV 1.0 DREJP i7-8565U N17S-G2-A1 MEC1663
Laptops that use NM-B901
- Lenovo ThinkPad FT490
- Lenovo ThinkPad FT492
- Lenovo ThinkPad T490
- Lenovo ThinkPad T590
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 |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |