Upgrade or Install Samsung Galaxy J2 SM-J200GU to Android Lollipop 5.1.1. The firmware available for downloading http://www.sammobile.com/firmwares/database/SM-J200GU. You can download your Samsung Galaxy J2 SM-J200GU firmware at the page, available for some countries. How to Root for Samsung Galaxy J2 SM-J200GU is the separated post, this post only for upgrading to Android Lollipop.