Sony Mobile 在 Blog 公布，为 Xperia Z1 和 Z Ultra 推出 Firmware 更新，可以改善效能和稳定性。
Xperia Z1 就改进了相机拍摄程式，拍摄整体效能提升，程式运行更流畅。
– tweaked the camera algorithm for even better all round performance
– refined Sony’s Smart Social Camera platform, so Xperia Camera apps run more smoothly (particularly Burst Mode, Superior Auto, AR Effect and Sweep Panorama…)
Xperia Z Ultra 就优化了屏幕触控敏感度。
– optimized touchscreen sensitivity, for both finger gestures and writing / sketching with pencils, metal pens and selected styluses
两部装置也调整了屏幕显示，改善电池用电量，并优化 Exchange 连线可以有更快电邮同步, 显示和下载。
-re-calibrated the display ever so slightly, to ensure viewing experiences remain bright & bold
– economised power consumption for longer battery life
– streamlined Exchange connection for faster email sync, display and download
当然更新推出的确实时间，视乎不同地区市场而有所不同。
资料来源：Sony Mobile Blog