BIOS firmware package for the Irbis NB132 notebook, with S133A as the only other token in the name, probably a board or variant code although that is not certain. The 4.04 MB RAR archive gives no flash chip, revision or version details, so open it and check what image it holds before use. Images like this are written to the SPI flash with a hardware programmer such as a CH341A. Read and save the original chip contents first, and confirm the image size matches the chip capacity, otherwise it will not fit.
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 →