Upgrade or Install Samsung Galaxy Alpha SM-G850W to Android Lollipop 5.0.2. The firmware available for downloading http://www.sammobile.com/firmwares/database/SM-G850W. You can download your Samsung Galaxy Alpha SM-G850W firmware at the page, available for some countries. How to Root for Samsung Galaxy Alpha SM-G850W is the separated post, this post only for upgrading to Android Lollipop.