Follow all the steps in that link, that will upgrade your OS to 4.5. Once your OS is upgraded to 4.5 (you can check by going to Options > About) you can do procedure one.
The difference between stupidity and genius is that genius has its limits.
When you take things for granted, the things you are granted, get taken.
Even a mosquito doesn't get a pat on the back until it starts to work.
Too many people miss the silver lining because they're expecting gold.
[BES 5.0.3 / GroupWise 2012 HP2]