Package for the Dahua DH-XVR4232AN-X, a 32-channel recorder, provided as an 80.5 MB ZIP with identifiers 30_262 and 80187072 that likely denote board version and part number. The size suggests a full flash image or multiple files. It serves for restoring a recorder with a dead bootloader or damaged firmware. Check the codes printed on your mainboard, dump the original memory with a programmer for safekeeping, and confirm the image fits the installed chip.
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