Xperia Tablet Z: Update to Android 4.2.2 Jelly Bean Official Firmware 10.3.1.A.0.244

Android 4.2.2 Jelly Bean is available for Xperia Tablet Z now. The official firmware build number is 10.3.1.A.0.244. Tablet Z come with Android 4.1.2 out of the box and it can now enjoy the multiple user login feature with Android 4.2.2 Jelly Bean as well as some add-on features. Android 4.2.2 Jelly Bean for Xperia Tablet Z has been pushing out nearly a week ago and most of you should have received update OTA notification. If you have not receive the OTA update or update from Sony Companion, alternatively you can follow us on the manual flashing process below. Check out the tutorial below.

Root Xperia Tablet Z Android 4.2.2 Jelly Bean is not available for now. If you have a rooted Xperia tablet Z and wish to update, you probably will lose the root access. If you wish to remain your root, we suggest you not to proceed with this tutorial. However, you can upgrade the new firmware and try. You can easily downgrade your tablet firmware back to Android 4.1.2 if you wish (Drop us comment if you need helps). For those who are using official firmware, you can proceed with us without any worry. Bear in mind, tutorial below only applicable to Xperia Tablet Z 16GB LTE SGP321 model on firmware 10.3.1.A.0.244. You are highly in risk if you test this firmware on some other Tablet Z model.

Sony Xperia Tablet Z is one of the best android tablet in market today with the elegant, stylish and solid design. It is equipped with 1.5GHz quad core Qualcomm Snapdragon S4 Pro APQ8064 processor with GPU Adreno 320. It has 2GB RAM and internal 16GB internal storage, an additional 64GB SD card slot. Sony Xperia Tablet Z has a 10.1 inch Full HD (1920 x 1200 pixels) display with 224 ppi pixel density. It has also a 6000mAh non-removable battery with NFC. Following its sibling product, Sony Xperia Z, Tablet Z is also a waterproof and dust resistant tablet (IP57). Sony Xperia Tablet Z come with Android 4.1.2 Jelly Bean as stock operating system firmware out of the box, and upgradable to Android 4.2.2 Jelly Bean.

How To Update Sony Xperia Tablet Z to Android 4.2.2 Jelly Bean Official Firmware 10.3.1.A.0.244

We have total 3 ways to update your devices officially. They are update via OTA (Over-The-Air), update via Sony PC Companion for Windows/Sony Bridge for Mac and manual update via Sony Flash Tool. Update via OTA and Samsung Kies are the easiest ways for update yet you have to wait the release from Samsung (It could takes up to a month of waiting). Manual update with Odin is the fastest way to get latest update yet need some additional manual installation steps. We will cover all 3 update methods in our tutorial.

Disclaimer: It’s always a risk to modify your device. We, Android Teen are not responsible for any damage or bricks on your device. Your device warranty may void with any mod. Check your devices warranty’s term & conditions before start.(HTC,Samsung,LGSonyMotorola). Use this guide on your own risk, contact us for help if you face problem.

Pre-requisites & Requirements

  1. Sony Xperia Tablet Z LTE SGP321 16GB model  (Ensure correct device model and firmware;Check device model – Go to Settings -> About Device -> Model Number)
  2. Windows-based computer or laptop
  3. Download Sony Xperia Tablet Z USB driver for Windows and install in your computer. Connect device to computer with USB cable to complete installation. Skip this step if you have installed the USB driver.
  4. Enable USB Debugging on your device. How to Enable USB Debugging Mode on Android Devices.
  5. Make sure your phone is charged to 60% 80% to avoid battery blackout and interruption during this tutorial.
  6. We recommend you make a backup on your data and media files before the tutorial. You may restore the data and files if necessary.

Reminder: Firmware upgrade should not delete your device data yet you may experience inconsistent performance after upgrade. Optionally, we recommend you to make a backup and do a clean upgrade. Ensure you meet the requirements before proceed. Contact us if you face problem.

Choose Your Update Methods:

Instructions: How To Update Sony Xperia Tablet Z to Android 4.2.2 Jelly Bean via OTA

  1. Ensure you have stable internet connection (Wifi or data network) on your devices.
  2. Power up your device, go to android apps drawer, select Settings.
  3. Under Settings menu, select About phone under System.
  4. Select Software update under About phone.
  5. You should see an update available, press OK to download and install. (Caution: Download with 3G will incur additional charges to your phone bill!)
  6. Your device will reboot automatically and complete installation.
  7. If you see “The latest updates have already been installed”, you have to wait for Samsung to release the OTA update.
  8. Check out manual updates which give you the fastest and latest firmware update.

Instructions: How To Update Sony Xperia Tablet Z to Android 4.2.2 Jelly Bean via Sony Companion / Bridge

  1. Ensure you have stable internet connection on your computer.
  2. Download and install Sony Companion for Windows / Sony Bridge for Mac on your computer.
  3. Power up your device and connect it to computer with USB cable.
  4. Open up Sony Companion / Sony Bridge on your computer.
  5. Wait for Sony Companion / Sony Bridge to detect your device.
  6. You should able to see New Firmware Upgrade is available at the home of Sony Companion / Sony Bridge .
  7. Press on Firmware Upgrade button to proceed.
  8. Check the box to agree all the T&C about the upgrade and Press Start Upgrade to proceed.
  9. Wait download and installation to run. Do not disconnect your device at this moment.
  10. You should see your device running upgrade and reboot automatically.
  11. Upgrade is complete. (Check device firmware – Go to Settings –> About Phone–> Android & Baseband version)
  12. If you see “Your phone/tablet is up to date” in Sony Companion / Sony Bridge, you have to wait for Sony Mobile to release the update via Sony Companion / Sony Bridge.
  13. Check out manual updates which give you the fastest and latest firmware update.

Instructions: How To Manual Update Sony Xperia Tablet Z to Android 4.2.2 Jelly Bean via Sony Flash Tool

If both OTA and Sony Companion / Sony Bridge updates do not work for you, follow tutorial below to manual update your device with Sony Flash Tool.


  1. Android 4.2.2 Jelly Bean firmware for Sony Xperia Tablet Z 10.3.1.A.0.244 (Xperia Tablet Z (SGP321)_GLOBAL-LTE_10.3.1.A.0.244_GENERIC.ftf | 776 MB) – Source
  2. Sony Flashtool (flashtool- | 112.77MB)


  1. Download Sony flashtool into your computer. Double click on the flashtool.exe file to install. You should see a flashtool folder in C Drive.
  2. Double click on flashtool icon in the folder mentioned in Step 1 to launch flashtool (either is FlashTool or FlashTool64.exe)
  3. For first timer, navigate to C:\Flashtool\drivers folder to install “Flashtool-drivers”. Select and check the box of your device model and Flashmode Drivers.
  4. While your device is powered on, connect your device to computer with USB cable. Make sure all drivers are installed properly before start.
  5. Download Xperia Tablet Z (SGP321)_GLOBAL-LTE_10.3.1.A.0.244_GENERIC.ftf  and copy to C:\flashtool\firmwares folder in computer.
  6. On the flashtool, click on the lightning icon and click flashmode, then “ok”.
  7. You should see a new windows.
  8. At the right sidebar, check “Data, Cache, Appslog” boxes if you wish to wipe the device before flash. To remain your device data, uncheck all the boxes.
  9. At source folder, browse and choose Xperia Tablet Z (SGP321)_GLOBAL-LTE_10.3.1.A.0.244_GENERIC.ftf in the flashtool/firmwares. 
  10. Press flash button to start flashing.
  11. Follow the prompt instructions.
  12. First, to unplug your device from PC.
  13. Second, power off your device.
  14. Third, enter to Flash Mode on your device by press and hold Volume Down button while connect your device with USB cable to computer.
  15. Forth, connect your device back to computer with USB cable. The screen display will still remain blank in dark.
  16. Monitor the Flashtool in computer. It should continue to run and flash the *.ftf.
  17. Wait until the flash process to complete. You should see “Flashing finished” from the flashtool.
  18. Power on your device and you shall now with new firmware.
  19. Check device firmware to ensure you have properly installed latest firmware – Go to Settings –> About Phone–> Android & Baseband version.
A 18 years old young android enthusiast who loves Android (Big fans of David Beckham too). He enjoys learning, testing and sharing on Android latest technologies. He likes to play around with custom ROM flashing, customize theme, discover new applications, system tweaking and more. Now, he owns Galaxy Note 2, HTC One, Nexus 7, Nokia Lumia 520 and iPhone 5.
  • androidteen

    Sergio, we are hardly find Android 4.1.2 firmware ftf. If you able to find it, then we can help you to restore.

  • androidteen

    Hi, it works for all tablet z, with or without root. You can use the tutorial to update and gain root again. We has not verify the root for this latest firmware but you can have a try and let us know.