I haven't been able to update my phone the normal way for about a year now (whatever the update after last year July's update was). I must have messed with some system file but I can't remember. Now I always just do system updates with Code: ssu re whatever.the.release.number.is version --dup Works well, and you can keep using your phone as it's being updated!
ssu re whatever.the.release.number.is version --dup