BIOS dump covering the Dell Inspiron 5521 and 3521, which share the Compal LA-9101P motherboard. The 3.16 MB RAR archive is meant for reflashing the SPI BIOS chip when the laptop will not power on, loops at startup or shows no display after a failed update. Compal identifies its boards with LA-xxxxP codes printed on the PCB, so verify that code before writing anything. Always save a copy of the original chip, as it holds the service tag and other unit-specific data, and check that the image size suits the 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 @bioshub. 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 →