Upgrade or Install Samsung Galaxy Alpha SM-G850S to Android Lollipop 5.0.2. The firmware available for downloading http://www.sammobile.com/firmwares/database/SM-G850S/. You can download your Samsung Galaxy Alpha SM-G850S firmware at the page, available for some countries. How to Root for Samsung Galaxy Alpha SM-G850S is the separated post, this post only for upgrading to Android Lollipop.