I have an original first generation PS3 with OFW 3.55. I want to install "Rogero CEX 4.30 v2.05" and it says: So I went on got the latest version of multiMAN and attempted to follow this guide when I noticed that I apparently have to have a custom firmware installed first. So what do I do? I need multiMAN to safely install a CFW, but I need a CFW to install multiMAN? Is there some additional program I should be installing first, or what?