Update Xperia Z Ultra C6802/C6883 Official 14.2.A.0.290 Android 4.3 Jelly Bean Firmware


How to Install Android 4.3 Jelly Bean 14.2.A.0.290 Firmware on Sony Xperia Z Ultra:

      1. Before moving forward, please make sure that you’ve read the pre requisites and ensure that you are set to go ahead.
      2. Download the latest firmware Generic/Nonbranded Android 4.3 Jelly Bean 14.2.A.0.290 FTF file for Xperia Ultra C6802
      3. Download the latest firmware Generic/Nonbranded Android 4.3 Jelly Bean 14.2.A.0.290 FTF file for Xperia Ultra C6833
      4. Copy the file and paste in Flashtool>Firmwares folder.
      5. Open Flashtool.exe now.
      6. Hit the small lightening button on the top left corner and select Flashmode.
      7. Select the FTF firmware file that you placed in the Firmware folder. 
      8. From the right side, select what do you want to wipe. Data, cache and apps log, all wipes are recommended, perhaps you may select if you don’t want.
      9. Click on OK, and it will start preparing the firmware for flashing. This may take a little while to load.
      10. As soon as the firmware is loaded, it will prompt you to attach the phone by turning it off and keeping the back key press.
      11. For Xperia Z UltraVolume Down key will do the job of back key, just turn off your phone, keep the Volume Down key pressed and plug in the data cable.
      12. As soon as the phone is detected in Flashmode, the firmware will start flashing, Do not leave the Volume Down key until the process is complete.
      13. As soon as you see “Flashing ended or Finished Flashing” leave the Volume Down key, plug the cable out and reboot.
      14. That’s All! Congrats! You’ve installed latest Android 4.3 Jelly Bean on your Xperia Z Ultra Enjoy.

That’s All! In case you got any queries/suggestions or face any difficulties regarding this post, please feel free to stop by the comment box below and drop us your message. We will respond as quick as we can.

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Usama is a software engineer by profession and at TechBeasts.com he uses his expertise to solve everyday consumer tech problems with his main areas of interest being Android, iOS and Windows.


  1. Hi there.. Great tutorial! Question… mine is c6802… Can I flash rom c6833 into it?will it damage my z ultra?thanks.

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