NM-B391 BIOS Dump
Part of NM-B391
6 BIOS files for NM-B391 are indexed here. The board is used in the Lenovo Legion Y520-15IKBN, Lenovo ThinkPad R720 15IKBM and Lenovo Y520 15IKBM. 1 of them is marked as tested by the uploader. Board revisions: 1.0 and V1.
BIOS files 6
FileSizeRevAddedSource
From the uploader
Lenovo Y520-15IKBM MODEL 80YY NM-B391 REV 1.0 NVIDIA N17E-G1-A1 SR30W SR32Q
LENOVO R720-15IKBM DY520 NM-B391 REV 1.0 2017-04-14 7th Gen CPU
LENOVO R720-15IKBM DY520 NM-B391 REV 1.0 2017-04-14 i7-7700 1060 6G
Laptops that use NM-B391
- Lenovo Legion Y520-15IKBN
- Lenovo ThinkPad R720 15IKBM
- Lenovo Y520 15IKBM
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 |