Sony has just gone live with the latest Android 4.4.4 KitKat firmware update (build number 10.5.1.A.0.283) for the 4G-LTE variant of its Xperia Tablet Z (SGP321) in several European countries including Switzerland, UK, Spain, Scandinavia, Germany, Bulgaria and Czech Republic on Vodafone and Swisscom networks. You can download its FTF package through links given in this article below.
