Upgrade or Install Samsung Galaxy Folder LTE SM-G150NK to Android Lollipop 5.1.1. The firmware available for downloading http://www.sammobile.com/firmwares/database/SM-G150NK/. You can download your Samsung Galaxy Folder LTE SM-G150NK firmware at the page, available for some countries. How to Root for Samsung Galaxy Folder LTE SM-G150NK is the separated post, this post only for upgrading to Android Lollipop.