My aTV2 is currently running jaillbroken with Seas0nPass 0.6.5. I just updated Seas0nPass to 0.6.6 on my Mac, but I'm uncertain about the process to update the aTV2. Do I have to repeat the whole jailbreak process? Will I lose all the config on the aTV2 when I do so? Or do I just Boot Tethered from the 0.6.6 Seas0nPass?
If you're not seeing any issues, or if you're using a wired ethernet connection there is no reason to re-jailbreak the AppleTV.