4
No, You follow the directions for the rest of them...
The easy step is ONLY for going from 2.4.5
Personally I have had issues and have seen other people have issues with 2.5 so I would suggest upgrading to 2.4.5 and making sure that works and backed up before trying 2.5 as 2.4.5 is supposed to fix some things over 2.4.x.
Attending College working towards Bachelors in Software Engineering and Network Security.