it's 2 ways format on laptop = u need get pendrive with ur CFW version cuz after that ps3 will call to install that version what u have ... 2 way its recovery menu and format but rebuild ps3system will delete ur's hombrew too soo i think u need install again webman plugins psn patch multiman irismanager or other shits.... ;] and i am not sure about psn content i think u can lost users ... but best way it's format on pc and first save psn acc login and pass ;p u can backup all saves by toolkit = even that saves what cannot be copied ... and remove blue ray when u clean using laptop ;] cuz it's risk to get instaled ofw ;] - u get back all losted space on hdd ... i lost 20-40 gb ... on errors ... also u can try fix bad sectors on pc ;] cya