How to upgrade from 12.x to 14.x?
1520
How to install software or upgrade from an old unsupported release?
77692
How do I update Drush to the latest available version?
125976
What Happens When I Upgrade Ubuntu?
31506
How do I update Ubuntu manually?
66915
How to request a package upgrade in the next Ubuntu release
144662
How to get Gnome 3.14 on ubuntu 14.04
127766
how to upgrade my Debian package with minor changes
79358
Upgrade High-Trust Addin/App from 2013 to 2016
140470
How do I update kernel to the latest mainline version?
130579
how to upgrade a single package in debian
16837
Unable to upgrade from 14.04 to 14.10 "Cannot Calculate Upgrades"
105335
How do I upgrade my Ubuntu server from one LTS version to another? Is this safe?
128471
How do I update from 9.0.10 to 9.1.0?
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
89856
How to resume the interrupted upgrade from 14.10 to 15.04?
4309
How can I download an older version of OS X/macOS?
2670
Why is "No new release found" when upgrading from a LTS to the next?