Apks files download but will not install? I wanted to downgrade my YouTube app so I got a few APK files from previous versions, and they downloaded successfully . When I clicked on them to install, the page showing install and cancel came up. Once I chose the install button it took me a page which said installing, but it immediately stopped and told me the app is not installed (picture) . I tried this with 3 different apk files and through many downgrading apps but i emded up in the same place and the same thing kept on happening. Background info: Samsung s4 mini, 700mb storage space, unknown sourced apps allowed. Someone please help I hate this update.
If you have upgraded the YouTube app, then you can easily downgrade it. Just open YouTube's app info and then click Uninstall Updates button. In this way you can get the default version of YouTube back.