We don't know how you lived life with your Apple TV when it didn't keep your YouTube subscription videos in order by date, or suffered audio incompatibilities with some TVs and AV receivers but now you no longer have to because today's 4.2.2 software update has fixed those and several other ailments. Hit up the official support document for the list of minor tweaks that have been issued since 4.2.1 abolished flickering screens and 4.2 brought improved sports apps and surround sound for Netflix.