Tiny 512-byte binary labelled only i6400, with no further details about the board, panel or chip in the name. A file this small is typically an EEPROM content such as an LCD EDID or a small configuration memory rather than a system BIOS. Technicians use such dumps to rewrite a damaged serial EEPROM with a programmer. Identify which chip it belongs to before use, confirm that the capacity matches, and always save the existing contents first, because writing the wrong data can disable the display or device.
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 @afsbiosfree. 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 →