Samsung just made available the Android 6.0 Marshmallow firmware for its Galaxy Note 5 all over the world. Many Samsung firmware sites are popping with 6.0.1 build based firmware, N920CXXU2BPB6, for the Note 5.
Find the link below for the Note 5 Marshmallow firmware, and install it using our own firmware installation guide linked below.
Installing a Samsung firmware is an easy job, and no matter what you have currently installed, the firmware would install alright over that. SO, even if you have a custom ROM installed, you can safely directly install the Marshmallow firmware from below to update and go back to stock in one shot.
Installing the Android 6.0 firmware given below for Note 5 will remove TWRP recovery and root. Please be aware of that. We would update this post with working root and recovery as and when available.
Download Note 5 Android 6.0 Marshmallow firmware (find 6.0.1 build, for Note 5 model no. N920C).
Not that the above firmware is compatible only with model no. N920C of Note 5. Do not use the above firmware on any other model no. or any other Samsung device. To install, follow our guide on how to install Samsung firmware.