How to I add apps to my Apple TV running software version 6.2.1
how do I add apps to my older version Apple TV?
Apple TV, Software 6.2.1
Question marked as
You don't. Only the 4th Gen and 4K models have an app store and they run a different platform, TVOS, which those apps are based on.
The 2nd Gen is considered obsolete, with 6.2.1 being the last update