I can't upgrade
51768
Could not calculate the upgrade, what happened?
110148
Why does `do-release-upgrade` skip a version?
63176
How can I update to Ubuntu 21.04?
100494
Update Manager asking me to update kernel but apt-get upgrade does not?
135383
Unable to update my system Ubuntu13.04: Getting message - requires installation of untrusted packages
36529
How to revert an update?
80794
Ubuntu 18.04 stuck at upgrading linux-header
49161
Upgrade manager wants me to do a partial upgrade
19288
Update manager doesn't offer an upgrade to the new release
148872
I can't select updates in Update Manager
5820
How to fix the “Unable to calculate upgrade” issue from command line when upgrading from 12.04 to 14.04?
42634
How do I upgrade to the development release (aka. Ubuntu+1)?
67481
How to revert a do-release-upgrade?
43272
Can't update iPhone to a specific version : "iphone could not be restored device isn't eligible for the requested build"
19361
Can't update because the word prox* is blocked
78518
Windows 7, update.packages problem: "unable to move temporary installation"?
15687
How do I resume a release upgrade?