Firmware set for the P855-S5312 notebook on Compal board LA-8392P, containing separate MAIN, PCH and EC images according to the name. MAIN is likely the primary BIOS, PCH the chipset-related region and EC the embedded controller code, all packed in a 3.03 MB RAR. Compal uses the LA- numbering for its motherboards. Technicians flash these to recover dead or bricked boards. Back up every original chip before writing, match the board number on the PCB, and check each image fits its chip.
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 @afsbiosfree. 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 →