Some drawings for state machines (like Figure 47 - PrepareForUpdate state machine) have more transitions, as in the model.
For example, there are two transitions from Preparing to Idle, but only one in the model. I assume the idea is to emphasize, that this transition can also be triggered internally, but since the model does not have it, it is rather confusing. Two transitions would make sense, if they would have different effects (which they do not seem to have).

So I recomment to remove the additional transitions in the drawings to be in sync with the model.