On Fri, 26 Apr 2019 at 17:05, Ralf Mardorf via ubuntu-users <ubuntu-users at lists.ubuntu.com> wrote: > > On Fri, 26 Apr 2019 17:56:44 +0200, Ralf Mardorf wrote: > >download the ISO and the checksum again You are assuming (I think) that he upgraded using an image. It is equally likely that he did it online. Colin