BIOS and EC firmware set for the Acer Extensa 2540, model code B5W11, built on Compal board LA-E061P revision 1.0. LA-xxxxP is Compal's numbering for laptop motherboards, so the ODM is Compal. On boards like this the embedded controller firmware sits in a separate chip or region, and a corrupted EC can cause no-power or charging faults. Flash each image to its chip with a programmer after backing up the originals, and confirm the image sizes match the flash parts.
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 →