NM-D491 BIOS Dump
Part of NM-D491
NM-D491: 3 BIOS files found in the source channels. The board is used in the HP 550, Lenovo ThinkPad P15 Gen 2 and Lenovo ThinkPad P17 Gen 2. Board revisions: 2.0.
BIOS files 3
FileSizeRevAddedSource
Laptops that use NM-D491
- HP 550
- Lenovo ThinkPad P15 Gen 2
- Lenovo ThinkPad P17 Gen 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 |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |