NM-B021 BIOS Dump
Part of NM-B021
NM-B021: 7 BIOS files found in the source channels. The board is used in the Lenovo ThinkPad L470 and Lenovo ThinkPad L470D. The uploader marked 1 as tested/working. Board revisions: 2.0 and 1.0.
BIOS files 7
FileSizeRevAddedSource
Laptops that use NM-B021
- Lenovo ThinkPad L470
- Lenovo ThinkPad L470D
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 |