if you have the atv flash go into maintenace and click on update, then click on the new tab untethered that’s it
if you don’t have the flash go into nito tv and it will be on the top line to untethered , but the fix in nito tv isn’t great because you will have audio and video problems.
then lastly, just download the newest verison of season pass and re jail break it
yes, just get the newest verison of season pass and creat the ipsw file. remember if you still have the old verison on your computer erase it so you don’t use it. A good way to know if you are running the new version is during the process itunes doesn’t open anymore so if it opens you are running the old version of season pass
The mapping between ATV firmware versions, the iOS version they are based on and the current jailbreak status can be found at http://forum.firecore.com/topic/3418