Upgrade or Install Samsung Galaxy S4 GT-I9500 to Android Lollipop. The firmware available for downloading http://www.sammobile.com/firmwares/database/GT-I9500/. You can download your Samsung Galaxy S4 GT-I9500 firmware at the page, available for some countries. How to Root for Samsung Galaxy S4 GT-I9500 is the separated post, this post only for upgrading to Android Lollipop.