JellyBean firmware update for Samsung Galaxy Grand duos is finally arrived in India. There are also rumors that this shall be the last and final firmware upgrade for Galaxy Grand. Many things have changed after this upgrade Image credit : By MiniDwarf (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons : Like the Calculator : The