Acer Aspire ES1-511 BIOS for the C8GU configuration, on Compal board LA-B511P from the Z5W1M project, in a 2.71 MB 7z archive. Compal numbers its notebook boards LA-xxxxP, and the Z5W1M code is the project name printed beside it. Technicians use such a dump to reflash the SPI chip with a programmer when the laptop has power but no image. Keep a copy of the original chip, check that the board number on the PCB matches, and verify that the file size corresponds to the flash capacity.
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 @biosfiles. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →