Sony’s Xperia Z isn’t the only device that got update to Android  5.1.1 Lollipop, the company also released an update for the phablet Xperia Z Ultra, the update carries the build number 14.6.A.0.368 and the Android version is 5.1.1 Lollipop. That being said, the update is currently rolling out globally, however, if you are running a phone with unlocked bootloader or for some reason haven’t received the update, you can still update your phone manually. 

Updating the Xperia Z Ultra isn’t a difficult thing, all you need is some basic Android knowledge and some tools. If you’re willing to update your Xperia Z Ultra, simply follow the guide below.


  • Download and install the latest flashtool from here.
  • If you are using Windows 8, 8.1 or 10. You’ll need to turn off the driver signature. Check out this guide.
  • Turn on the USB debugging by going to Settings > About Phone > Tapping the ‘Build number’ at least 7-8 times and going back into settings and then going to Developer Options.
  • Download the latest 14.6.A.0.368 ftf from here

 Update Sony Xperia Z Ultra C6833 to Android 5.1.1 Lollipop

  1. Once the files are downloaded, copy them to flashtool/firmwares folder.
  2. Fire up the flashtool and wait for it to load.
  3. Once the flashtool is up and running, click on the small lightning bolt on the top left and choose Flashmode.
  4. Select the firmware file you placed in the firmwares folder.
  5. Make sure all boxes are unticked apart from Wipe Data/Cache/App logs.
  6. Once you are done making the selection, click the ok button and wait while the update gets prepared.
  7. Turn off your phone and wait for the message that asks you to attach your phone.
  8. Press and hold the volume down key and attach the USB cable to your phone.
  9. As soon as the firmware starts flashing, leave the volume down key and wait for the phone to flash the firmware. Do not disconnect the phone at any cost.
  10. Once the firmware is flashed, you will get a message asking you to reboot your phone.
  11. Reboot your phone and wait for 5 to 10 minutes for the first boot.

That’s it, you have successfully updated your Xperia Z to the latest Android 5.1.1 Lollipop, in case you have faced any issues, feel free to let us know.