BIOS firmware for the ASUS ROG Zephyrus G GU502DU, an AMD-based model, with version 208 indicated in the file name, packed as a RAR archive of 6.65 MB. Technicians use such an image to recover a board with corrupted firmware by writing it to the SPI flash using a programmer like the CH341A. Before flashing, read and save the original chip contents, since they hold serial and board-specific data, and check that the extracted image size matches the capacity of the flash chip on the board.
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 @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →