NM-B901 EC / KBC Firmware

Part of NM-B901

2 EC firmwares for NM-B901 are indexed here. The board is used in the Lenovo ThinkPad FT490, Lenovo ThinkPad FT492, Lenovo ThinkPad T490 and Lenovo ThinkPad T590. Board revisions: 1.0.

EC files 2

FileSizeRevAddedSource
MEC1663 NM-B901 REV 1 OK
EC
175 KB
1.0
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FT490 FT492 FT590 FP531 NM B901 REV 1 0 2018 12 28 U5502 U2101 MECBIOS
BIOSEC
10.3 MB
1.0
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Laptops that use NM-B901

What these files are for

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

FormatWhat it isOpen with
.rarRAR archive7-Zip or WinRAR