BIOS image for a Positivo board, abbreviated pstvo in the name, identified as A14HV0X revision 4.0 with the code S1990. The 1.71 MB RAR archive should be opened to confirm the exact image file. Dumps like this are written to the SPI flash with a programmer when a laptop or desktop is bricked or shows no video. Compare board number and revision on the PCB, save a copy of the original chip contents, and check the image size against the flash chip capacity.
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 →