I am sorry that it won’t help you all now but with many fairly modern devices it is necessary, or at least a “good idea”, to have Updater preferences (3 dot menu top right) set to " Update recovery".
Over simplified, recovery contains a map of where things go. If this should (unusually) change with an update then the old recovery could be a cause of trouble; this may especially affect devices where “extra partitions” have to be flashed at new install.