Raw BIOS image for the ASUS A53S, using the K53SV motherboard of revision 3.1. The 4 MB size matches a 32-megabit SPI flash chip. Technicians program it with an external programmer when the laptop powers on with a black screen or after a failed update. Confirm the PCB revision is 3.1, as 3.0 and other revisions are common. Back up the existing chip contents first, since serial number and MAC address are stored in the original.
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 @biosbigarchives. 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 →