RAR archive with BIOS files for Dell Wistron board 18778-1, labelled 10th, which most likely points to a 10th-generation Intel platform. The name lists 8MB and 16MB images, so the board appears to use two SPI flash chips, and each dump must go to the matching chip. The dash-suffixed five-digit number is Wistron's scheme for its Dell boards. Use these images to reprogram a dead or corrupted board with an SPI programmer. Read and save both original chips before writing anything.
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 @schematiclaptopramkushwaha. 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 →