RAR archive of 1.80 MB with BIOS firmware labelled 5755g, a code that resembles the Acer Aspire 5755G, though the name gives no brand or board number. Extract it and check what it holds, a full SPI image or a vendor update file. Before programming, find the mainboard number on the PCB and make sure it is the right platform. Read and save the existing chip contents with a programmer, then compare the image size with the flash capacity so that the dump fits correctly.
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 →