Sony 为 Xperia Tablet Z Wifi 版本推出了更新，升级至 Android 4.2.2，Firmware 版本为 10.3.1.C.0.136。
更新除了升级 Android 版本外，亦加入了多项改动，例如：支援 64GB SD Card, 支援 Multi-User, 新版本的 Sony Media Apps 等。
– Latest version of Sony Media Apps with seamless integrated services
– The my Xperia application that helps you find your phone and secure everything you have on it. Read more at myxperia.sonymobile.com
– New customisable navigation bar with quick settings
– New widget functionalities, both on lockscreen and homescreen
– Support for bigger (64GB) SD card so that you can store even more on your Xperia™ tablet Z.
– Multi-User function support
检查更新，可以在平板按 “设定 > 关于平板 > 软件更新 > 系统更新”，又或透过电脑软件 PC Companion 经 USB 进行。
Source: Sony Mobile via Xperia Blog