Please refer to my prior comment. The shim issue in https://bugs.launchpad.net/ubuntu/+source/ubuntu- release-upgrader/+bug/1930369 has not been corrected.
(I addressed the update is available & then no longer available in that comment with a provided answer found on a support site) Your pastes in comment #2 all pre-date details I provided. ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1930369 Title: Kubuntu 20.10 does not offer release upgrade to 21.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1930369/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs