Can't update old Ubuntu version
1520
How to install software or upgrade from an old unsupported release?
32829
One single command to update everything in Ubuntu?
12614
Upgrade problem
91210
Why does Ubuntu only support versions for a limited time (and what does it mean)?
123455
Unable to update Node JS - keeps returning to old version [Ubuntu 15.04]
60351
How can I update to a newer version of Git using apt-get?
43648
Why isn't an upgrade to 20.04 from 18.04 available yet?
86777
Distribution upgrade problem "No new release found"
66915
How to request a package upgrade in the next Ubuntu release
59088
How to upgrade to a newer release of Ubuntu using the Live CD?
74990
Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."
115421
Ubuntu 13.10 to 14.04 Lts does not upgrade, keeps showing error
129101
Upgrading Ubuntu 9.04 to 9.10 when Update Manager doesn't let you
126659
upgrade from 11.10 to 12.04 - No upgrade option available in update manager
85943
Can't update or install apps on Ubuntu Touch
479
How can I boot with an older kernel version?
24165
Upgrade to version newer than repositories