Firmware dump from a DVR labelled HY-MH-8286-4, described in the name as a 5-in-1 recorder, which usually means it accepts several analogue HD camera standards. The name states a 16 MB flash, and the archive is 11.1 MB in compressed form. Write the image to the SPI chip with a programmer to recover a unit that no longer boots or shows a corrupt logo. Keep a read of the original chip, confirm the chip is really 16 MB, and check the board marking because generic DVR boards vary widely.
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 →