Firmware package for an IFON or Simaran board marked SH-73M200, delivered as a RAR archive of about 3.6 MB. The name offers no version, chip size or revision, so check the files inside and compare the board code printed on the PCB before use. Small desktop board firmware like this is usually written to an SPI flash chip with a hardware programmer when the board fails to start after a bad update. Read and keep the original chip contents, and make sure the image size matches the chip capacity before programming.
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 →