NM-B421 BIOS Dump 16MB
Part of NM-B421
11 BIOS files for NM-B421 are indexed here. The board is used in the Lenovo ThinkPad E480, Lenovo ThinkPad E580 and Lenovo ThinkPad R480. Image size: 16 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 11
FileSizeRevAddedSource
EE480 EE580 NM-B421 REV 1.0 2017-10-30 BIOS 7 KBEC OKOK
BIOSECTestedVIP
7.3 MB
1.0
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Laptops that use NM-B421
- Lenovo ThinkPad E480
- Lenovo ThinkPad E580
- Lenovo ThinkPad R480
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 |