Firmware update / Stock ROM : Samsung Galaxy J3 SM-J3300 to Android 7.1.1 Nougat. The firmware available for downloading https://www.sammobile.com/firmwares/galaxy-j3/SM-J3300/. You can download your Samsung Galaxy J3 SM-J3300 firmware at the page, available for some countries. How to Root for Samsung Galaxy J3 SM-J3300 is the separated post, this post only for upgrading to Android 7.1.1 • Read More »