Help with new jailbroken Atv2

Hi, I just purchased a apple tv2 4.4.4. It is already jailbroken but I realized after purchasing it does not have flash black installed. I dont have the maintenence option so I am assuming that means I do not have flash black. Also noticed I can not use ustvnow. I get a play back error?? I was wondering why I would be getting that error for that and some more items. Also wondering if my atv2 is already jailbroken do I need seasonpass? I am really new to this and dont really know where to start. Its obvious I need to purchase and downloads flash black. Im hoping I can get some help with my many issues.

 

Thank you

Also want to know how i get plug ins??