Update Sony Xperia Z2 D6503 To Official Android 5.0.2 Lollipop 23.1.A.0.690 Firmware [How To]

After Xperia Z3 & Xperia Z3 Compact, Sony has started rolling out the Android 5.0.2 Lollipop update for Xperia Z2 as well. As of now, this update is rolling out for D6503 variant in Baltic and Nordic regions. The update carries some major changes including the UI change atop of the list. New UI is designed according to Google’s Material Design, but as always, Sony has kept the changes very minimal. There are new notifications on the lockscreen, new user and guest modes. Battery life and the over-all performance of the device has been enhanced and improved as well.

Android 5.0.2 Lollipop is reaching out the users through OTA updates or through Sony PC companion. It will take a while for this update to hit different regions all across the world. Users who can’t wait to get their hands on this update as soon as possible, they will have to find some workaround for this. Before you start looking out for that, we’ve already done the job for you. In the on-going post, we are going to flash / install this official Android 5.0.2 Lollipop firmware carrying the build number 23.1.A.0.690 on Sony Xperia Z2 D6503 using the FTF in Sony Flashtool. Let’s go through some early preparations now and then update our beloved Xperia Z2.

Early Preparations:

1. This is only for Sony Xperia Z2

This ROM is only for the device mentioned above. Make sure that your model number matches the one listed above. To do so, go to Settings > About Device on your device and see your model number. Flashing this firmware on any other device will result in bricking it so make sure that you meet this requirement first of all.

2. Battery should be charged at least over 60%.

Make sure that your battery is charged enough to complete the flashing process. In case your battery is low and your device goes dead during the flashing process, you may end up soft bricking your device as it won’t complete the flashing process.

3. Backup everything!

Just to be on the safe side, you may consider backing up each and everything from your Android device. This is highly recommended so that in case anything goes wrong, you still have the access to all of your data and you can restore it immediately. You may backup everything as listed below.

  • Backup SMS Messages
  • Backup Call Logs
  • Backup Contacts
  • Backup Media – Copy your files manually to your PC or Laptop.
  • Titanium Backup – If already rooted, use Titanium Backup to backup all of your apps, system data and other important content. If you haven’t rooted your device previously, skip this step.
  • Backup Nandroid – If CWM  or TWRP installed previously, otherwise skip this step and perform this at the end of flashing.

4. Enable USB Debugging Mode on your device.

Enable USB debugging mode on your device. To do so, tap settings>developer options>USB debugging. If you can’t find developer options in settings, then tap settings > about device and tap “Build Number” for 7 times and you’ll get em’ activated under settings.

5. Install and setup Sony Flashtool.

You must have installed Sony Flashtool. Find the full guide here.

After installing Sony Flashtool, open the Flashtool folder from the drive where you installed it. Now open Flashtool>Drivers>Flashtool-drivers.exe and install the Flashtool, Fastboot & Xperia Z2 drivers from the list. [Important]

6. Use OEM data cable to establish connection.

Make sure that you use the phone’s original data cable to establish connection between your phone and the PC. Using a different data cable might result in interrupting the firmware installation.

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How To Update Sony Xperia Z2 D6503 To Official Android 5.0.2 Lollipop 23.1.A.0.690 Firmware

Before moving forward, please make sure that you’ve read the pre requisites and ensure that you are set to go ahead.

  1. Download the latest firmware Android 5.0.2 Lollipop 23.1.A.0.690 FTF file.
    1. For Xperia Z2 D6503[Generic/Unbranded] Link 1 | Link 2
  2. Copy the file and paste in Flashtool>Firmwares folder.
  3. Open Flashtool.exe now.
  4. Hit the small lightening button on the top left corner and select Flashmode.
  5. Select the FTF firmware file that you placed in the Firmware folder.
  6. 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.
  7. Click on OK, and it will start preparing the firmware for flashing. This may take a little while to load.
  8. 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.
  9. For Xperia Z2 Volume 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.
  10. 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.
  11. As soon as you see “Flashing ended or Finished Flashing” leave the Volume Down key, plug the cable out and reboot.
  12. That’s All! Congrats! You’ve installed latest Android 5.0.2 Lollipop on your Xperia Z2. Enjoy

In case you got any queries or face any problems regarding this guide, please feel free to stop by the comment box below and let us know. We will get back to you as soon as possible. Thanks all!


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Usama M

+Usama M: Ex Farmviller | Android Fanatic | Software Engineer,Founder - TechBeasts.com
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  • Derek Oleynik

    Hey Usama. Everything seemed to work out just fine, except i can’t access any of my text messages. The stock messaging, downloading messaging, nothing seems to be connecting to see any messages at all.

    • @derekoleynik:disqus this is an official firmware, there can’t be such a bug in this. Try factory resetting your device, that may help.

  • Derek Oleynik

    Hey Usama, i can’t seem to get my text programs to work. I can’t receive or send anything, and i cannot open any text programs.

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