Upgrade or Install Samsung Galaxy On5 SM-G550FY to Android 5.1.1 Lollipop. The firmware available for downloading https://samsung-firmware.org/model/SM-G550FY/. You can download your Samsung Galaxy On5 SM-G550FY firmware at the page, available for some countries. How to Root for Samsung Galaxy On5 SM-G550FY is the separated post, this post only for upgrading to Android Lollipop.
Tags: Android 5.1.1 Lollipop, firmware update, On5 SM-G550FY