Firmware update: Samsung Galaxy Note 7 Duos SM-N9300 Android 6.0.1 Marshmallow. The firmware available for downloading https://samsung-firmware.org/model/SM-N9300/. You can download your Samsung Galaxy Note 7 Duos SM-N9300 firmware at the page, available for some countries. How to Root for Samsung Galaxy Note 7 Duos SM-N9300 is the separated post, this post only for upgrading to • Read More »