Sony has rolled out Android 4.2.2 Jelly Bean software update with build number 10.3.A.0.423 for its flagship phone Xperia Z, which was shipped with Android version 4.1.2. The new firmware beings more stable Jelly Bean experience and several notable features such as multiple lock screen, widgets and notification toggle buttons.

Sony Xperia Z
Sony has released Android 4.2.2 update for the Xperia Z.

The update is available on Sony PC Companion/Sony Bridge for Mac as well as via Over-The-Air (OTA) update. To check for the OTA update, navigate to Settings>> About phone>> Software update>> OK to download and install the update.

Those who failed to install the OTA update, may follow our step-by-step instructions guide to install the official Android 4.2.2 firmware manually. There are two different method: one is to install Android 4.2.2 via Sony PC Companion for Windows/Sony Bridge for Mac and the other one is using Sony Flash tool.

IBTimes UK reminds its readers that it will not be held responsible for any damage to the device. Before installing the firmware, users are advised to verify that their devices meet following requirements.


1) Install USB Driver for Sony Xperia Z to connect the Android device with computer.

2) Enable USB Debugging Mode on the phone to connect it with the computer and use Android SDK with it. [Press Menu>> Settings>> Applications. From there navigate and click on Development option then check the USB Debugging Mode.]

3) As the tutorial might wipe all data of the phone, create a backup. If the device is having any custom recoveries such as CWM/TWRP already installed then backup data using recovery.

4) The Xperia Z should have above 80% of battery charge.

5) The device will lose custom ROM with the installation of official firmware. Additionally, it will lose custom recovery such as ClockworkMod/TWRP which will be replaced by stock recovery.

6) The phone will no longer belong to a rooted version with the installation of official build.

7) The official Android 4.2.2 Jelly Bean build works only with Sony Xperia Z C6602/C6603. Flashing this on incorrect variant might brick the device. Therefore, verify the model number of device by navigating to Settings>> About device>> Model number and then download appropriate firmware.

Method-1: steps to install Android 4.2.2 on Xperia Z via Sony Companion/Bridge

Step-1: Ensure that the computer is having stable internet connection

Step-2: Download and install Sony Companion for Windows/Sony Bridge for Mac on the computer

Step-3: Connect the Xperia Z to the computer using USB cable

Step-4: Open the Sony Companion/Sony Bridge on the computer. Wait for some time until the Sony Companion/Sony Bridge detects the phone

Step-5: Users should now see new Firmware Upgrade is available at the home of Sony Companion/Sony Bridge

Step-6: Press the Firmware Upgrade button to proceed

Step-7: Check the box to agree all the T&C about the upgrade and press Start Upgrade to proceed further

Step-8: Wait download and install to run

Step-9: users should see the device is running upgrade and reboot automatically

Step-10: The update should be completed. To verify the new software version running on the phone, go to Settings>> About Phone>> Android & Baseband version

Step-11: If you see Your phone/tablet is up to date on the Sony Companion/Sony Bridge then wait for Sony Mobile to release the update via Sony Companion/Sony Bridge

Method-2: Steps to install Android 4.2.2 Jelly Bean on Xperia Z via Sony flash tool

Step-1: Download Android 4.2.2 Jelly Bean firmware for Xperia Z to the computer

Download links:

Android 4.2.2 Jelly Bean v10.3.A.0.423 for Xperia Z C6603 [Unbranded/Netherlands]

Android 4.2.2 Jelly Bean v10.3.A.0.423 for Xperia Z C6603 [Unbranded/Spain]

Android 4.2.2 Jelly Bean v10.3.A.0.423 for Xperia Z C6602 [unbranded/Taiwan]

Download appropriate official firmware according to the model number of the phone.

Step-2: Download Sony Flashtool to the computer. Double click on the flashtool.exe file to install. You should see a flashtool folder in the C Drive


Step-3: Double click on flashtool icon to launch the flashtool

[Those who are first timer, navigate to C: / Flashtool / drivers folder to install Flashtool-drivers. Select and check the box of the device model and Flashmode Drivers.]

Step-4: Connect the Xperia Z to the computer using cable. Ensure that all drivers are installed properly

Step-5: Now copy the downloaded .ftf file (official firmware) to the C: / flashtool / firmwares folder in the computer

Step-6: On the flashtool, click the lightning icon and click flashmode then click OK. A new window should appear now

Step-7: At the right sidebar, check Data, Cache, Appslog boxes if users wish to wipe the device before flashing. To remain the device data, uncheck all the boxes

Step-8: At source folder, browse and choose .ftf in the flashtool / firmwares. .ftf

Step-9: Now press flash button to start flashing

Step-10: Follow the prompt instructions

To unplug the phone from the computer

Then power off the device

Enter Flash Mode on the device by pressing and holding Volume Down button while connect the phone to computer using USB cable. The screen of the device will remain blank

Step-11: Monitor the Flashtool in the computer. It should continue to run and flash the .ftf

Step-12: Wait until the installation process is completed. The completion of the installation process will be indicated by a text saying Flashing finished from the flashtool

Step-13: Power on the device. It should be now updated with the new official firmware. To verify the new software version running on the phone, navigate to Settings>> About phone>> Android & Baseband version.

Provided all the instructions are followed strictly, users should be now able to enjoy the Android 4.2.2 update on the Xperia Z.

Also read: Update Xperia Z to Android 4.2.2 (10.3.1.A.1.10) new firmware

[Source: Android Teen]