I downloaded http://alephzain.klutsh.com/default_payload_3_41.bin (kindly provided by someone on #psfreedom), replaced the default payload with that, and then start PS3 with my N900. PSN did work just fine, I updated all my games, bought Bomberman Ultra from the Store, and then went offline. Now, a WARNING: It's VERY likely you will get banned sooner or later for using this. If you don't want to get banned DO NOT use this and instead wait for one that has proper working stealth mode!