8MB BIOS image for the Dell Inspiron 15z 5523, with 11307 most likely the Wistron board project number and W25Q64 naming the Winbond 64Mbit flash chip the dump is sized for. It is written to that chip with an SPI programmer to recover a laptop with no display or a bricked BIOS. Check the board number on the PCB first, read and save the existing chip contents, and remember the image matches an 8MB part only.
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 →