Q: How do I upgrade Gnome Files (nautilus) in Ubuntu Gnome 16.04 I was using Ubuntu Gnome 15.10 and had upgrade gnome shell via ppa to 3.18. Yesterday I updated my distro to 16.04 and was surprised to find files is now version 3.14!
How can I get the latest version?

A: You can add the gnome3 repository to your system and upgrade.
sudo add-apt-repository ppa:gnome3-team/gnome3

sudo apt-get update && sudo apt-get upgrade

Worked for me.

A: To make it work, I had to first remove the old ppa:
sudo ppa-purge ppa:gnome3-team/gnome3 

then update the dist
sudo apt-get dist-upgrade

and only then:
sudo add-apt-repository ppa:gnome3-team/gnome3

sudo apt-get update && sudo apt-get upgrade

