Firmware update: Samsung Galaxy C7 SM-C7000 Android 6.0.1 Marshmallow. The firmware available for downloading https://samsung-firmware.org/model/SM-C7000/. You can download your Samsung Galaxy C7 SM-C7000 firmware at the page, available for some countries. How to Root for Samsung Galaxy C7 SM-C7000 is the separated post, this post only for upgrading to Android 6.0.1 Marshmallow.