Hey there. I, too, have been wondering for a few weeks how to upgrade my new CM edition N1 from 10.2 to 11. Most of the advice here and elsewhere relate to people with a ColorOS N1 who want to update to CM11. After reading through much material on the internet, I finally decided to take a leap of faith and do the update today. Everything went well (mostly - I had a scare in the middle because it wouldn't power off, but I figured it out), and I'm proud to say I now have KitKat on my N1 now (CM11 M6 version).
This is the guide I used to do it: http://www.oppoforums.com/threads/ho...ted-4-19.6388/
That's it, other than these notes above, just follow the guide, and you should be good to go! Let me know if you have any questions