A 1 MB firmware file in .fd format named AV70316A, a code that does not plainly reveal the device or vendor. The .fd extension is commonly used for UEFI or BIOS firmware volume and capsule images, which may need extracting or padding before they can be written directly to a chip. Inspect it with a UEFI tool to see the structure and any model strings. Make sure the resulting image size matches the SPI flash on the board, and back up the original chip before trying any programming.
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 →