Firmware update: Samsung Galaxy J7 SM-J7109 to Android 6.0.1 Marshmallow. The firmware available for downloading https://samsung-firmware.org/model/SM-J7109/. You can download your Samsung Galaxy J7 SM-J7109 firmware at the page, available for some countries. How to Root for Samsung Galaxy J7 SM-J7109 is the separated post, this post only for upgrading to Android 6.0.1 Marshmallow.
Tags: Android 6.0.1 Marshmallow, firmware update, Galaxy J7 SM-J7109, stock rom