is the original version of the YouTube Android application, historically released around the launch of the Android 1.0 operating system in 2008. It represents a foundational piece of mobile history, although it is no longer functional on modern devices or servers. Technical Overview
In the early days of Android, YouTube was one of the first popular apps to hit the market. The first version of the YouTube app for Android, version 1.0, was released in 2008, shortly after the Android operating system was first introduced. This initial version of the app was a basic video player that allowed users to browse, search, and play YouTube videos on their Android devices. youtube 1.0 apk
Are you trying to from the old layout, or are you just curious about Android history ? YouTube 1
The core features were simple: