I installed Chrbuntu 13.04 recently and it works great, however I was updating some programs when a pop-up appeared asking if i wanted to upgrade to the newest version. I didnt realize that it was still unstable and buggy. I am unsure on how to do this. Ive been told that i need to wipe the ubuntu partition completely but i dont see why that is neccesary.

Basically i want to remove ubuntu 13.10 and use the partition it is installed on to install 13.04.

Sorry for being a noob on linux but i hope you can help, And thanks for your time.