A 4 MB BIOS binary identified only by the Compal board number LA-4021P; the name gives no laptop model, revision or version. Compal uses LA-xxxxP numbers for the boards it makes for brands such as Dell, HP, Acer and Lenovo. The 4 MB size points to a 32 Mbit SPI flash. Confirm the LA-4021P marking and revision on the PCB, back up the original chip with a programmer, and use the file to recover a board with corrupted firmware.
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 .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →