NM-A421 BIOS Dump 16MB
Part of NM-A421
8 BIOS files for NM-A421 are indexed here. The board is used in the Lenovo ThinkPad T460S. Image size: 16 MB. 7 of them are marked as tested by the uploader. 1 has a cleaned Intel ME region. Board revisions: 3.0 and 4.0.
BIOS files 8
FileSizeRevAddedSource
BT460 NM-A421 REV 3.0 2015-11-26 ME REGION WORKING BIOS 100%
BIOSTestedClean ME
13.9 MB
3.0
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From the uploader
LENOVO T460S BT460 NM-A421 REV 4.0 2016-04 HF TYPE 20HG UNLOCK BIOS 100%
Unlock T460S patched-OK TESTED AND WORKING 100%
Remove all battery and CMOS battery
press F1 to enter setup: password 1234
wait 20sec or more.
Enter any ID to hardware Id.
Press 2x space bar when asked.
Turn off the computer.
and restore your original bios .
Enjoy.
If 2x 5beep, it's normal.
Wait minimum 30sec before screen logo light on. Must turn on/off several times by itself.
bios archive team
Laptops that use NM-A421
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 |