I looked at my exdata folder and saw rif files only and couldn't find act. dat in it. I don't know what happened with it since I didn't reformat my hdd or anything. It's just that when PSN was overhauled after it had been hacked that I couldn't play my games and DLCs. It was asking for authentication by logging in to PSN.
Can I still use reACTPSN so that I would be able to open any PSN content in my PS3?