wpcentral posted a news story that Microsoft has released a Windows Phone Support Tool that fixes NoDo update errors

Still, on the rare occasion there are still a few errors happening (though we haven't heard anyone complain yet to us). Specifically there are two errors that seem to affect a small amount of users that have the following codes:
800705B4: The timer ran out on what we were trying to do.
80180080: We couldn't update your phone because your operating system might be corrupt.

  Windows Phone Support Tool fixes NoDo update errors