Do what you would enjoy, Whether you play on psn or not. If you want to rip your games then go downgrade, If you want forever psn then update.
Its a personal choice, I'm only on 4.2 or whatever update so i can play bf3 and gt5 online with work mates.
I enjoyed cfw, But my ps3 managed to build up dust. And this was a year on cfw knowing work mates play online, When i updated it has been played on religiously =P.