btw, pkg files are taken from sony's servers like the cdn of NIntendo. they'll never disappear unless sony opts to take them down. rap files are just the content id+a hex key, which you can create in HxD. they're nothing special at all, so you could tell people the content id, then the rap key, and those won't disappear either as they've all been backed up on people's computers. iso files will remain as they've been replicated so many times over across the internet, so don't worry about this stuff. if you're trying to copy a game, that's in jb format, convert to iso with ps3 iso tools. don't copy a pkg game as some games, like little big planet, have tens of thousands of files, and it's like it will get corrupted. just use the pkg, 1 file, it won't matter how many files are inside, it won't have a problem with that.