Upgrade or Install Samsung Galaxy A8 Duos SM-A800F to Android Lollipop 5.1.1. The firmware available for downloading http://www.sammobile.com/firmwares/database/SM-A800F/. You can download your Samsung Galaxy A8 Duos SM-A800F firmware at the page, available for some countries. How to Root for Samsung Galaxy A8 Duos SM-A800F is the separated post, this post only for upgrading to Android Lollipop.