Update Sony Xperia M2 Dual D2302 To Android 4.4.2 KitKat 18.3.B.0.31 Official Firmware

Sony has started updating its mid range device, the Xperia M2 Dual to Android 4.4.2 KitKat, the new update  is based on the build number 18.3.B.0.31. While there’s a number of rumors and news getting us closer to the launch of Sony’s next flagship, the Xperia Z3, Sony is trying its best and showing its users that despite being busy with the next flagship, it still is treating its existing users in a great way by providing them the latest software in time.

Just to have a recap, the Xperia M2 Dual landed in June, 2014. The device sports a 4.8 inches with 229 ppi. The device is powered up with Qualcomm Snapdragon 400 Quad Core CPU clocked at 1.2 GHz accompanied by Adreno 305 GPU and a RAM of 1 GB is there. Initially, the Xperia M2 Dual ran on Android 4.3 Jelly Bean and the device just started receiving the KitKat update just now. Xperia M2 Dual’s specifications are a great package in the price Sony is selling it at.Xperia M2 Dual

The new update, first of all is based on Google’s latest Android 4.4 KitKat and then are the enhancements. Sony has improved the camera application, battery and performance have been improved and there are bug fixes. Besides this, the new firmware aims at making the device even more stable. The software updates are on a slow roll out and will hit the different regions accordingly as usual.Xperia M2 Dual KitKat Details

Since its a little hard for the Android enthusiasts to calm down and wait for the updates patiently, the only way in this situation is to get the update manually instead of relying on the OTA update or through Sony PC companion. If you’re one of them, we’ve something here for you. In the succeeding post we are going to update Sony Xperia M2 Dual D2302 to Android 4.4.2 KitKat based on the build number 18.3.B.0.31 official firmware using the ftf file and flashing it through Sony Flashtool. Let’s go through the early preparations and then flash this firmware.

Early Preparations:

1. This is only for Sony Xperia M2 Dual D2302/S50h!

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.

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.

How To Install Android 4.4.2 KitKat 18.3.B.0.31 Official Firmware On Sony Xperia M2 Dual D2302:

  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 Android 4.4.2 KitKat 18.3.B.0.31 FTF file.
    1. For Xperia M2 Dual D2302/S50h [Customized IN | Generic/Unbranded]
  3. Copy the file and paste in Flashtool>Firmwares folder.
  4. Open Flashtool.exe now.
  5. Hit the small lightening button on the top left corner and select Flashmode.
  6. Select the FTF firmware file that you placed in the Firmware folder.
  7. 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.
  8. Click on OK, and it will start preparing the firmware for flashing. This may take a little while to load.
  9. 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.
  10. For Xperia M2 Dual, 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.
  11. 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.
  12. As soon as you see “Flashing ended or Finished Flashing” leave the Volume Down key, plug the cable out and reboot.
  13. That’s All! Congrats! You’ve installed latest Android 4.4.2 kitkat on your Xperia M2 Dual. 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

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  • Bahadır Çınar

    I using M2 Dual (D2302) in Turkey, and still can’t receive KitKat update. My Update Center says, “You already latest updates.” Any problems if I install this firmware to my phone? I mean, SIM or Network problems? Or this Generic version able to install all M2 Dual devices? Please inform me, i waiting about 2 monts for this upgrade.

    • @bahadrnar:disqus you can install it using the guide explained above. There’s no problem with this.

      • Bahadır Çınar

        Thank you for guide, I got KitKat now! It works perfectly in my Turkey device. Thanks so much 😉

        • @bahadrnar:disqus Anytime, stay connected with us.

  • @bahadrnar:disqus Here’s a guide to create and flash FTF, if 4.4.4 is available, you may use this: http://techbeasts.com/2014/08/26/how-to-download-sony-xperia-official-firmware-and-create-ftf-file/

  • NRW

    The Sony Flash Tool download link is dead. Are there any alternatives?

    • Chivazandshadowboy Roxas Roces

      Can i ask a question how can i get ah update firmware for my xperia m2 d2302 i already update my phone via OTA I’m running d2303 4.4.4 kitkat.I’m trying to update now using pc companion but i cant get the lates.pls can u help me? Tnx

  • @ahmadialviansyah:disqus sorry, at the moment we do not have any such guide or tutorial. If we find a method, we will definitely post it on our site.

  • faruque ahmed

    Hi, I m using M2 Dual (D2302) In Malaysia, My device is updated with Lolipop. Now I would like to Downgrade to Kitkat .I have downloaded All Software and FTF and i have installed drivers.exe and installed the Flashtool, Fastboot & Xperia Z2 drivers. Now I m trying to flash with the FTF file but it says ”
    26/020/2016 02:20:29 – ERROR – root : this bundle is not valid
    26/020/2016 02:20:29 – INFO – Selected Bundle for Sony Xperia M2 (D2302). FW release : 18.3.B.0.31. Customization : Customized IN
    26/020/2016 02:20:29 – INFO – Preparing files for flashing
    26/022/2016 02:22:27 – INFO – Please connect your device into flashmode.
    By the way , i have rooted my device by Kingroot apps.And successfull. i couldn’t able to install CWM recovery. So in this case , i need ur help. Did miss something or any steps or what should i do now to downgrade my xperia m2 dual d2302. Thank u.

    • @disqus_GQpXOUoqVq:disqus Which FTF file areoyu trying to flash? It looks like something is wrong with the FTF file, if this the file that we have linked above.. let me know, I’ll find another file and give it to you.

      • faruque ahmed

        Thanks Brother. U replied to me . It’s my great pleasure. I have downloaded “D2302_18.3.B.0.31_Customized IN.ftf”/1008MB from the link given in this paze. (Google drive link)and tried it to flash.And i have unlocked bootloader- yes by using sony flash tool and installed CWM custom recovery also showing same errors. Now my M2 Dual(D2302) is stucked on sony logo screen and vibrating continuously. By pressing volume down button, I can go only CWM recovery menu, and if i plug the charger, device showing sony logo and red notification light on top. So plz give me solution. Thanks a lot.

  • rowdy fab

    i tried every step, but when i’m clicking the small lightening button on the top left corner and selecting Flashmode option, and then selecting the ftf frimware, nothing is being displayed
    my ,M2 d2303 is seriously dead, please help…..

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