Apple has released a software update for the Apple TV 2. This is a bug fix release and does not include any new features.
The software update fixes four issues. The first is flickering that some users reported when watching Apple TV. The second was when the Apple TV would not wake up from sleep all the time. The third issue fixed is where audio may not be recognized if a user just switched from another input, like cable or DVD player. The final fix is ‘stability and performance’ fixes.
Apple TV 4.2.1 is a recommended update for all Apple TV 2 owners.
To update your Apple TV 2, go to Settings -> General -> Update Software. The update may take a few minutes to download and install.
Let us know of any new bugs you may encounter.