I like the updating message, Don't turn off your PC, this will take a while. Off and on its taken 2 days so far. If I try updating online it gets stuck at 14%, if I try updating via ISO it gets stuck at 19%. Have tried disconnecting unnecessary USB stuff, disabling (though not removing) antivirus and disconnecting from internet while updating. Any other ideas before I maybe try some of the more involved fixes suggested ?
these logs would be the starting place