Have you try? Keep us updated!
A new firmware update is currently rolling out for the Xperia Z (C6603). New firmware version 10.1.1.A.1.253 is still based on Android 4.1.2, but is said to bring a number of improvements including performance enhancements, white balance display calibration, soft keys and nav bar changed to black (instead of grey) as well as an option to disable the notification light amongst other things.
http://www.xperiablog.net/2013/05/14/new-firmware-10-1-1-a-1-253-rolling-out-for-xperia-z/
A new firmware update is currently rolling out for the Xperia Z (C6603). New firmware version 10.1.1.A.1.253 is still based on Android 4.1.2, but is said to bring a number of improvements including performance enhancements, white balance display calibration, soft keys and nav bar changed to black (instead of grey) as well as an option to disable the notification light amongst other things.
http://www.xperiablog.net/2013/05/14/new-firmware-10-1-1-a-1-253-rolling-out-for-xperia-z/

