Upgrade or Install Samsung Galaxy Mega On SM-G6000 to Android Lollipop 5.1.1. The firmware available for downloading http://www.sammobile.com/firmwares/database/SM-G6000/. You can download your Samsung Galaxy Mega On SM-G6000 firmware at the page, available for some countries. How to Root for Samsung Galaxy Mega On SM-G6000 is the separated post, this post only for upgrading to Android Lollipop.