FT490 FT492 FT590 FP531 NM B901 REV 1 0 2018 12 28 U5502 U2101 MECBIOS
BIOSEC
10.3 MB · first posted in BIOS Archive
Get on TelegramWhat the file name tells us
| Brand | Lenovo |
|---|---|
| Model | Lenovo ThinkPad FT490 |
| Model | Lenovo ThinkPad FT492 |
| Board | NM-B901 |
| ODM | LCFC |
| Revision | 1.0 |
| Kind | BIOS, EC |
| Format | .rar |
| Date in file name | 2018-12-28 |
| Archive size | 10.3 MB |
| First posted | 2022-02-19 |
| Channel | BIOS Archive |
Parsed automatically from the file name and caption. Always compare the board number with the one printed on your board.
What this kind of file is 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.
EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.
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 |
Other files for NM-B901
FileSizeRevAddedSource
LENOVO T490 T590 DRIFT NM-B901 v1.0 PDF
Schematic.pdf
2.5 MB
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FT490 FT492 FT590 FT591 NM-B901 W25Q256FV TESTED OK
BIOS32 MBTested
12.2 MB
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FT490 FT590 NM-B901 REV 0.3 2018-07-23 32MB OKOK
BIOS32 MBTested
28.9 MB
0.3
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ThinkPad P14s NM-B901 BoardView (BDV)(.TVW)
Boardview.bdv.tvw
880 KB
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