Well i know the PS3 Update Extractor, will pull apart a PS3 Firmware Update.. so you can view/edit the contents..
But of course its only one way.. no way to re-compile/encrypt.
Not sure of the other one, im assuming a tool to patch files to work with the harddrive, for use with a debug/test playstation 3. Someone else will have to confirm that for me.. im just guessing.