Default [Q] Returning to stock - How to find which OTA vers i had.

I need to return my phone to Bestbuy - I am trying to follow section 5 of this http://forum.xda-developers.com/show....php?t=1762709 guide but I'm not sure which OTA vers I was running. How would I find which one I had so I know how to continue, or is there an option I can use and it wont matter what I had?

Edit: Nevermind. I just misunderstood the guide.