fifaFS is the console tool used to install big amounts of files into FIFA 2005. fifaFS works with whole FIFA file system - which is located in fifa2005\data\ directory. You don't need to bother about zdata_xx.big, zdata_xx.bh files or fifa.fat. The program updates all these files automatically.
You just specify the file name which needs to be added, replaced or extracted. High productivity and speed of fifaFS is achieved by using script files which contain set of commands. So that you can replace 100 files by executing program only once.