BIOS dump labelled only Dell 3521, likely the Inspiron 15 3521 laptop, in a 7.45 MB BIN file. The size does not equal a standard flash capacity such as 8 MB, so the image may be partial, a region extract or a combined file, and it may not fit the chip as is. Inspect it with a hex editor or UEFI tool before writing. Always read and save the original SPI chip with a programmer first, and verify the mainboard number before flashing.
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 @laptop_bios_schematic. 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 →