BIOS firmware for the Dell Inspiron N5110, project DQ15, for the version with a discrete NVIDIA graphics chip. Dell built this model in both UMA and discrete variants, so match the image to the board you have, because a UMA board needs different firmware. The archive is meant for writing to the SPI flash with a hardware programmer. Read and save the original chip before erasing, keep the service tag data, and make sure the file size equals the chip 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 @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 →