Download either version and rename it to "keygrabber.prx" .

Place keygrabber.prx in ms0:/dh/kd, ms0:/dh/05/kd, etc. - the common folder used by all Devhooked firmwares.

In Devhook, in pspbtcnf_game.txt, right before the last two lines (the ones that start with "%"), add this:

/vsh/module/chnnlsv.prx
/kd/keygrabber.prx

Now, run your game. Try to save and the savedata key, game ID, and hex version of the key should be saved in ms0:/gamekeys.dat . A raw dump of the savedata will also be added to ms0:/saves.dat .