Yes, restore it to its default or original settings when my PS3 came out of the box.
And whew... it might not be much but I managed to get back my old saves, thanks to my eternal hard drive, back in the summer. Sadly games like my Mugen Souls, Dead or Alive 5, Call of Duty: Black Ops 2, Dragon Ball Z HD Budokai, Zone of the Enders HD Collection, Spider-Man: Shatter Dimensions, Spider-Man: Edge of Time, Mass Effect Trilogy, Ni no Kuni (hardly started in it), and possibly some old saves of FFXII where I was closer to the end (not sure), Way of the Samurai 4, and Legasista.
I got to start over on those. Not much, but it's better than nothing... going to continue to backup my saves in the future from now on for my PS3!