Henrique,
First of all, I'm sorry to hear that you won't be able to make it. But don't despair. Even though the differences between PMBOK 4 and PMBOK 5 are quite substantial it is nothing that cannot be mastered.
I checked our system and I see that you received a free upgrade to The PM PrepCast version 5 already. (I have re-sent the welcome message with instructions to your Hotmail email address.) So you can now switch over to the new version.
I also recommend that you read the following article that gives you a plan on how to "upgrade" yourself to the new version:
www.project-management-prepcast.com/inde...ok-guide-5th-edition
This will get you started on the right way.