With this tool from Diego Rostagnol you can: Import/Export files to the BIG files, Compress/Decompress the files in the BIG files, Add new files to the BIG files, Delete files that are in the BIG Files, Generate BH files for the zdata##.big files, Regenerate the fifa.fat file to work properly with the modified BIG Files, See the files in the BIG file filtered by file type.
IMPORTANT!!!
You also need to download the .NET Framework (20mb) in order to run this program.