Here's a ZLIB compression tutorial. The point of compressing files to ZLIB is so that you don't have to update the arcs. X-PacKer does not support updating the entries for most files other than the wrestler pacs, but, it can open/inject files into 'em. So basically, if we take out the part X-PacKer can't do(which is update the arcs for most non-wrestler pacs), then we basically blow open most of the game :)2 Before starting the tutorial I'd like to give thanks to the following people: Tekken57 f