RAR archive with BIOS firmware for a Jetway 2285-SJV50-TR system, with MB09228-1 also appearing in the name, likely a board or build reference. Contents are packed at 713 KB, so unpack and check the actual image size against the flash chip before use. Jetway boards are common in embedded and industrial PCs, where a vendor flash utility or an SPI programmer is used for recovery. Match the printed board model and revision to the name, and save the existing firmware before overwriting it.
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 →