(adsbygoogle = window.adsbygoogle || []).push({}); Alright, this is a very noob-ish question, If I were to want to install Rebug 4.21 Cfw, would I just set it up as if it were an update, or would there be any other steps before that? I have a 3.55 CFW PS3 right now,

Install legit 3.55 first (you don't have to, but I always do.) Then update like normal.

Make Sure You QA it