Are you looking to do something specific, like or fixing player ages ?
The file appears to be a compressed archive containing the FRAN-GREV (FRANchise-GREV) tool. This is a specialized fan-made utility used for modding and roster editing in sports video games, most notably Madden NFL and NCAA Football titles. frangrev.rar
Use a tool like Bruteforce Save Data (PS3) or Horizon (Xbox) to decrypt your franchise save first. Are you looking to do something specific, like
You should see an .exe file (the application) and potentially some .dll or readme files. 2. Preparing Your Save File frangrev.rar