Do you want speed up your Chromecast with Google TV ? Follow the steps below!
Firstly we need to enable the option to install from unknown sources
Click Android TV OS build 7 times until you see a message that Developer Options have been enabled
Go back until you see the Apps menu item, click that
Click Security & Restrictions
Push the right arrow to move to the right side of the screen where apps are located
Turn on unknown sources for the Downloader app