How to Update Xperia Z to Android 4.4.4 Kitkat firmware

Xperia Z is the high end Android Smartphone from and the device features a 5 inch full HD display with 1080 x 1920 pixels resolution. It is powered by 1.5 GHz Quad Core processor coupled with 2GB RAM and 16GB internal storage. Xperia Z runs on Android 4.1.2 Jelly Bean firmware and is recently updated to Android 4.4.4 Kitkat with 10.5.1.A.0.283 Build Number.

If you are android enthusiast then you might be looking for Custom ROM’s to customize, enhance, and tweak your device with the beauty of a Custom ROM. So for you we have come up with CM 11 Custom ROM. As we all know that CM 11 is the well know Custom ROM available for most of the Android devices out there, so we can trust this ROM and proceed to update Xperia Z using it.


  • Backup all the data stored on your device to a safe location
  • Make sure your device is charged to at least 75%
  • Enable USB Debugging on your device from the Developer Options.
  • Backup TA Partition and Unlock Bootloader
  • Install USB drivers suitable for your PC
  • Install CWM Recovery and Root Xperia Z.

Disclaimer: Continue at your own risk as the process might brick your handset.

How to update Xperia Z to Android 4.4.4 Kitkat using CM 11 ROM:

1. Download the CM 11 ROM package and Google Apps Package from here to your PC. Transfer both the packages to the root of your device’s SD card. Make sure to copy at the root of your SD card not inside any folder.

2. Power off Xperia Z.  Enter into Recovery Mode. To do so, press the power button, now while your device boots up and you see the Sony Logo, press the Volume Up button to enter into Recovery Mode.

3. Once you are in Recovery Mode, perform operations to clear cache, dalvik cache and data. Now select “Install zip from SD card” and choose the ROM package, which you have copied earlier and install it.

4. Now again follow the above step, but this time choose the Google Apps Package and Install it. Now again perform full data reset and clear cache and dalvik cache.

Once done, Go Back  and select reboot system now. Once the device boots up, you can experience the taste of Android 4.4.4 Kitkat on Xperia Z.