Sony Xperia Z Receiving New Update at Three Austria

The new firmware version appears to bring mainly bug fixes
by Ionut Arghire, June 21st, 2014
Sony Confirms Battery Issues with Android 4.4.2 KitKat for Xperia Z Devices

Sony Confirms Battery Issues with Android 4.4.2 KitKat for Xperia Z Devices

by Ionut Arghire, June 5th, 2014
Google Play Services drains battery, a workaround is available
 

Sony Xperia Z1 and Xperia L Start Receiving New Software Updates

Android KitKat for Xperia Z, ZL, ZR and Tablet Z receives certification
by Ionut Arghire, May 4th, 2014
North American Xperia Z Receiving Firmware Version 10.4.C.0.808 Soon

North American Xperia Z Receiving Firmware Version 10.4.C.0.808 Soon

by Cosmin Vasile, April 18th, 2014
The new update has been recently certified by PTCRB
 

Android 4.4.2 KitKat Arrives on Xperia Z, ZL, and ZR in May

Sony has updated support pages for these phones to reflect that
by Ionut Arghire, April 17th, 2014
 

Firmware Version 10.4.C.0.793 Gets Certified for Xperia Z (C6606, C6616)

The update is expected to arrive on T-Mobile's version of the device
by Ionut Arghire, February 11th, 2014
 
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