How to upgrade Ubuntu 13.10 (end of life) to Ubuntu 14.04?
1520
How to install software or upgrade from an old unsupported release?
45154
Where can I find 32-bit version of Ubuntu?
32200
How do I downgrade a package?
35973
Ways to update Ubuntu (debian-based distros) offline
29191
Upgrade to 18.04 from 17.10
16050
Can I upgrade Xubuntu 18.04 32-bit?
67359
Upgrade to the latest PHP version in Ubuntu
9901
How to upgrade from 18.10 to 19.10, using the command line?
144172
How to upgrade to a point release from the same base release (12.04 to 12.04.03)
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
119169
Should I upgrade to 14.04 LTS?
21524
I want to Change ubuntu 14.04 from 64 bit to 32 bit
131371
How can I install a newer kernel?
123413
Will apt-get dist-upgrade upgrade my system to a newer version?
144507
No facility exists in Update Manager to upgrade to a new version, why?
140470
How do I update kernel to the latest mainline version?
33540
How can I switch a 32-bit installation to a 64-bit one?