Sony rolls out firmware update for Xperia Z, ZL and ZR

08 February, 2014

Sony has started rolling out firmware update for the Xperia Z, ZL and ZR smartphones. This update is based upon Android 4.3 and brings with it several improvements to Bluetooth connectivity, battery, YouTube app and other software.

The update will soon be available for the Xperia Tablet Z as well, with the ETA to be announced some time next week.

Source