Update or Install Samsung Galaxy Tab A 9.7 SM-T550 to Android Lollipop. The firmware available for downloading http://www.sammobile.com/firmwares/database/SM-T550/. You can download your Samsung Galaxy Tab A 9.7 SM-T550 firmware at the page, available for some countries. How to Root for Samsung Galaxy Tab A 9.7 SM-T550 is the separated post, this post only for upgrading to Android • Read More »