Today I was updating my Ubuntu software and suddenly a 'not possible to update because package system is broken' error came up.
Somehow I try to follow from Ubuntu community in Google and something happens when I try to update using Software Updater. The 'required installation of untrusted package, this required installing packages from unauthenticated sources'.
I tried sudo apt-get update && sudo apt-get upgrade
from Google and the result is failed to fetch http://my.archive.ubuntu.com/ubuntu/dists/trusty/InRelease and many failed to fetch notifications.
Please help me because I'm new and I don't know how to fix it. Also my Ubuntu cannot connect to internet.
sudo apt-get update && sudo apt-get upgrade
?