Hello to you all. I have a question. I have ps3 with firmware 3.55 and i want to update to latest rebug cfw but i can't find clear tutorial on the Internet. Some say you need to install some toolbox or packages before you update from 3.55 to rebug or you will get bricked. Other say that you have different "versions" of 3.55 that on some of them it won't work. And also what is cex, dex, rex? I already hacked my 3ds ,wii ,wii u, psp and psvita. But in the ps3 scene i'm completely noob. I Never had or played on any main sony console (Ps1, ps2, ps3, ps4). I will very appreciate your help. Edit: i think i understand. The different versions of 3.55 refer to custom firmwares and the thing you need to install called "toggel qa" and you need to install it only if you downgrade to 3.55. So i just put the ps3updat.pup in the update folder that inside the ps3 folder and update via usb flash drive. Am i right?