Embedded controller firmware for the Lenovo G550, model type 2958, made for the ENE KB926QF D3 keyboard controller. The KB926 family is a common EC on laptops of this era that handles power-on, charging, fan and keyboard. A corrupted EC can cause no power or no charging symptoms. The 1.09 MB RAR should be unpacked to find the image. Check the EC marking on the board matches the D3 revision and back up the original flash before programming.
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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 17 Mar 2018 | Open file on RM Schematics |
| @biositechyangiyer | 19 May 2020 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | 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 →