It was a matter of time before the system dump of the Sony Xperia Z was leaked, especially as there are many devices in people’s hands now. The version leaked is for the western LTE version of the handset (C6603) rather than the NTT DoCoMo version (SO-02E). It comes from a supposed retail device running 10.1.A.1.350 firmware (Android 4.1.2). Further details can be found here. Ringtones, notifications, alarm tones and wallpapers from the device have also leaked, which you can find here.