Firmware or flash backup archive for the Dahua DH-HCVR4104C-S2, a 4-channel HDCVI recorder, packed in a 13.3 MB ZIP. Identifiers 30_166 and 8014182 in the name most likely refer to the board version and part number. Repairers use such dumps when a DVR is stuck at boot, loops on the logo or has a damaged flash. Read the original chip with a programmer first, compare markings on the mainboard with those in the name, and check that the dump size matches the installed memory.
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 @laptopchiplevelrepair. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip