Firmware dump for the Acer Extensa 2540 on the B5W11 platform, built on a Compal LA-E061P motherboard at revision 1.0. Packed in a 9.43 MB RAR archive. The same Compal board is shared with some Aspire models, so the PCB code, not the retail model, decides compatibility. Before flashing, read and store the current chip contents with a programmer such as a CH341A. Then confirm the image length equals the flash capacity and verify after writing to rule out a bad connection to the clip.
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 →