(adsbygoogle = window.adsbygoogle || []).push({}); How do I downgrade my PS3 to custom firmware? What is a good site to use? I'm trying to download the watch dogs game save but I need custom firmware to make it work.

What do I do after I get a PS3 with 3.55 firmware on it?

well u can install a more recent version of rebug rex on that bad boy n start modding the heck outta yo fav. games son .l.

The reason I want to use this hack is for the social lubricant trophy on watch dogs. But I have the game on ps4. So if I use this to get the trophy on PS3 would it show up on my ps4 as well?