Compressed copy of the firmware for the LG Flatron 20EN33SS-B monitor, dumped from a W25X40 4 Mbit SPI flash. The 135 KB RAR expands to a full chip image intended for the main board. Use it to reflash the serial memory with a CH341A or comparable programmer when the monitor has lost its software. Extract the binary first, check it fills the 512 KB capacity, save whatever the existing chip contains and confirm the board fitted to the unit matches this model.
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.
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 →