Firmware archive labelled TS-HI3502DV300 version 1.1, 12.3 MB in RAR format. The name points to a HiSilicon Hi3520DV300 based device, typical of DVR and NVR recorder boards, though no brand or exact product model is given. Such dumps are normally written to the SPI flash with a programmer to revive a unit stuck at boot or with corrupted firmware. Compare the board marking and flash chip size with your hardware, and read and keep a backup of the original chip contents before flashing anything.
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 →