Since it is a .rar file, you need a program like WinRAR or 7-Zip to extract the actual data file.
Adds new transponders and removes "dead" or moved channels.
The file must match your specific receiver brand and model (e.g., Senator, Starsat, Tiger), or you risk "bricking" the device (making it unusable).
It looks like you're searching for a file related to (Nilesat Arabic channel lists), likely for a satellite receiver.
Most often, this .rar file contains a .bin or .sdl file. When uploaded to a receiver via USB, it automatically: