BIOS firmware for the N56DP mainboard, revision 2.2, compressed into a 1.80 MB RAR archive. The name gives no version number or flash chip type, so inspect the extracted image size and compare it with the capacity of the SPI chip on your board. Images like this are written with a hardware programmer such as a CH341A when a corrupted BIOS leaves the laptop dead or looping. Always read and save the original chip contents first, and confirm the board is revision 2.2 before flashing anything.
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 →