How to upgrade the android OS of Samsung Galaxy?
You upgrade the android OS of Samsung Galaxy by first downloading the update. You can also initiate the update manually by going to settings and selecting "About Device". Then, click on software update so as to check for updates. Once you get the update, click on it so as to upgrade your OS. Read on from http://www.samsung.com/us/support/SupportOwnersFAQPopup.do?faq_id=FAQ00050358&fm_seq=55362.
in settings find software updates