Flash device image, 1.00 MB in FD format, labelled 3602F21, which suggests a platform identifier followed by release 21, but the name gives no brand, model or board number. FD files are commonly produced by Insyde-based firmware and might be either a complete chip image or an update package. Inspect it with a UEFI tool or hex viewer before programming the SPI flash externally. Confirm the source machine, read and store the current chip content, and check that the flash part is 1 MB so the image fits.
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 @bios_laptop. Enginerys does not host this file.
How to open a .fd file
UEFI flash-device image, typical for Insyde H2O firmware on Acer, HP and Lenovo laptops.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →