Raw 8 MB firmware image with the .fd extension, named MBA71_0178_B00, which follows the style of Apple EFI ROM naming where the prefix denotes the board family and the digits the firmware build. The name states no model beyond that code. Images like this are written to the SPI flash with a programmer to recover a machine that will not boot. Keep a copy of the original chip, which holds serial and system data, and confirm the chip capacity equals the 8 MB image.
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 @bioshub. 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 →