can not update 12.10 to 13.04
1520
How to install software or upgrade from an old unsupported release?
24165
Upgrade to version newer than repositories
5877
"Failed to fetch" while updating
139589
Unable to update Flash
118307
Why does upgrade from 12.04 to 12.10 using a CD/DVD still require download?
33651
How to upgrade from Ubuntu 12.10 to 14.04
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
123455
Unable to update Node JS - keeps returning to old version [Ubuntu 15.04]
107792
Update information outdated, "Failed to fetch cdrom"
36529
How to revert an update?
129101
Upgrading Ubuntu 9.04 to 9.10 when Update Manager doesn't let you
64744
Restarted computer during update; "the system network service is not compatible with this version"
63176
How can I update to Ubuntu 21.04?
149984
Can't update or install anything. Ubuntu 3.11.0.14
76241
"no public key available" while upgrading using update-manager
76628
Update to 3.13 kernel on Ubuntu 13.10
13107
How to install updates via command line?