Keyboard controller firmware read from a Lenovo LCFC board NM-C781 revision 1.0, using an ITE IT8586E embedded controller. The small 91 KB RAR holds the KBC/EC dump, separate from the main BIOS. LCFC, the Lenovo-owned ODM, uses the NM-xxxx numbering. A corrupt EC image can cause no power, charging faults or keyboard problems. Flash it with a programmer that supports the IT8586E or its external SPI chip, saving the original first and confirming the board number.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 24 Jan 2022 | Open file on RM Schematics |
| @Laptopbiossolutions | 19 Sept 2023 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →