Just opened a new PS3 with 3.50 on it. I would like to go to 3.55 KMEAW. How do I get to OFW 3.55 to then install CFW 3.55? I think I already DL'd the official 3.55 and the Custom 3.55 in a "complete" pack. Do I just update to OFW 3.55 through USB via Recovery?