Sony recently announced its Xperia Z Ultra phablet and the 6.4-inch beast with its Snapdragon 800 chipset is by far the most powerful device in the current market. Sony is yet to launch its monstrous phablet outside of Asia, but the company has already rolled out a firmware update for it. The latest firmware for the Sony Xperia Z Ultra has a July 19 build date and is pretty minor. There is no change...