Apple TV update

My appletv2 is jailbroken with the previous tethered version of seasonpass.  I would like to update the appletv to the latest ios and install the new untethered version of seasonpass.  But when I try to update the appletv2 ios, it consistently says update not successful. 

Do I have to restore the appletv2 before installing the new seasonpass?

Can I just use the new seasonpass without installing the latest ios?

Thanks for the help.

If you download and run the latest version of Seas0nPass your AppleTV will actually be updated to the latest version.