FD firmware image, 1.00 MB, named 3310, a bare number that does not state brand, board, chipset or version. FD stands for flash device image, a format used by UEFI and Insyde firmware toolchains, and it may be a full chip dump or only an update file. Inspect the contents with a hex editor or UEFI utility to confirm what it holds before using an SPI programmer. Identify the matching machine, back up the existing chip contents, and check that the flash part capacity is 1 MB.
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 →