NM-B501 BIOS Dump
Part of NM-B501
NM-B501: 7 BIOS files found in the source channels. The board is used in the Lenovo ThinkPad T480, Lenovo ThinkPad 01YR328 and Lenovo ThinkPad 20L6. Image size: 1 MB or 16 MB. The uploader marked 4 as tested/working. 1 has a cleaned Intel ME region. Board revisions: 1.0. 1 is a VIP/paid post in the source channel.
BIOS files 7
FileSizeRevAddedSource
ET480 NM B501 REV 1 0 2018 03 05 TYPE 20L6 i5 8350U 1MB & 16MB &
BIOS1 MB, 16 MBVIP
25.4 MB
1.0
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LENOVO THINKPAD T480 20L6 FT480 NM B501 REV 1 0 2018 03 05 SR3LC
BIOSTestedClean ME
13.8 MB
1.0
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ThinkPad T480 Type 20L5, 20L6 BIOS ET480 NM B501 16MB &1MB &EC IO
BIOSEC1 MB, 16 MB
8.5 MB
—
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From the uploader
LENOVO THINKPAD T480 (20L6) FT480 NM-B501 REV 1.0 2018-03-05 SR3LC i7-8550U CLEAR ME REGION & OOOKKK
LENOVO Thinkpad T480（20L5) ET480 NM-B501 Rev1.0 2018-03-05 U49 & U15 OOOKKK
FT480 NM-B501 REV 1.0 2018-03-05 i5-8350U TYPE 20L6-S69W02 (WORKING BIOS & PATCHED BIOS) U15 & U46
Laptops that use NM-B501
- Lenovo ThinkPad T480
- Lenovo ThinkPad 01YR328
- Lenovo ThinkPad 20L6
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 |