What iOS version is your iPad2 running now? To check, go to your Settings app (the one with the gray gear). Once there, go to the General tab and press on the first line, which is titled "About." In the list that appears is a line called "About." That is what your iOS is.
It may be that you will need iTunes to run an update. But, we won't be able to tell for sure until/unless you tell us your current iOS [installed on the iPad].
Marilyn