Zini TV is an ad-free, buffer-free application on FireStick, Roku and Android TV. It provide free HD TV shows and movies.
The steps of installing Zini TV on Fire Stick:
1. make sure that your firestick is jailbroken
2. Use an application called "Downloader", if you don't have one, search for it and install it. Make sure the app's permisssions are allowed.
3.Input the "Zini Tevi" URL and download it