What is Devhook?

I keep reading around all devhook addons and stuff but what is it? will i need it for some things? i plan to get a psp,pandora battery and latest prometheus and then later on 16GB Pro duo Memory stick....So any help?

ask ace101 psp is his specialty ;D

Replying to #2

Do u have any idea?

Simply put, it is a homebrew program that allow you to play homebrew on 1.5 OFW.
http://bestwikiever.wikidot.com/devhook

So considering some homebrew doesnt work on newer fw's would this utitlity run those older hoembrews? on prmetheus