Update's coming soon, uni's delaying it, sorry. It decides whether or not the CSSU is installed by reading mp-fremantle-community-pr's version, you might have uninstalled that somehow (and you won't get notifications about new updates because of this). Code: apt-get --reinstall install mp-fremantle-community-pr to restore it. I'll be replying to threads one by one when I have time
apt-get --reinstall install mp-fremantle-community-pr