RAR archive of 20.0 MB whose name appears to refer to the Openbox X5 receiver, with the brand spelled loosely; no version or date is given. The size suggests a fuller package, possibly firmware plus tools or several images, so extract it and inspect the contents first. Such files are used to reflash or recover a receiver with software faults. Confirm the model on the unit, keep a copy of the original firmware and settings, and maintain steady power during flashing.
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 @tvsoftwareworld. 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.