Update Xperia U to Android 4.4.2 with CM11 Custom ROM Firmware

Currently the Sony Xperia U is running on Android Jelly Bean OS and while many users are already expecting the Android 4.4.2 KitKat OTA update to be released, Sony isn’t doing anything in that matter so far. So, if you are tired of waiting and want to try the new Android OS on your own Android device, use this step by step guide as during the guidelines from below I will show you how to achieve the same. Actually we will be checking on how to install the Android 4.4.2 based CM11 custom ROM firmware on your Sony Xperia U, so if I have aroused your attention, don’t hesitate and check the following lines.

CM11 is one of the most popular custom Android ROM as the firmware brings important features, apps and capabilities for almost all the Android based devices out there. Of course, CM 11 is not an official update so the firmware has nothing to do with Google or in our case with Sony. The ROM is developed by third party devs and represents a modified version of stock Android 4.4 KitKat OS. The free aftermarket distribution of the Android system can be safely installed on your Sony Xperia U as the devs have been working on providing an optimized software that can smoothly run on your smartphone.

With CM 11 your Xperia U will be updated to Android 4.4.2 KitKat OS, though you will not be able to enjoy the pure Android experience. CM11 is coming with its own themes, looks and UI, so that’s why we said that CM11 is actually a modified version of KitKat software. Actually the ROM is also an improved version of the Android 4.4.2 system, as with this update your Xperia U will run faster, smoother and also better than before. How is this possible? Well, mainly because CM11 is having stock and extra features that can’t be found on the default version of Android OS.

CM11 for Xperia U is a stable ROM that has no bugs, issues or things that aren’t working properly. All the features can be used for improving the performances of your Android device and also for bumping its speeds. Furthermore, after completing this tutorial you will be able to receive more power from your Sony Xperia U, enjoy an improved battery life, an updated web browsing experience and access the internal system for making other important changes like removing in built apps or the bloatware, which are slowing down your smartphone.

In order to install CM 11 on your Sony Xperia U a manual update operation is being required. The same will be described below along with the essential and general pre requisites. So, first read and complete the tasks from the following list and only after that take care of the steps described on the proper flashing procedure.

  • Root your phone because a custom ROM can be flashed only on an unchained device. By rooting your Xperia U you will remove the factory and default restrictions so that you can access or unchain your device. And since CM11 need to access your phone’s system, gaining root access isn’t an option for you.
  • Be aware as by rooting you are performing the first unofficial operation – because of that the warranty of your handset will get void (basically the binary flash counter of your phone will be increased).
  • If you will need to restore the warranty you will have to revoke root access and remove the CM11 Android 4.4.2 Custom ROM. In order to do so you will have to downgrade your Sony Xperia U to stock Android OS.
  • Up next, you need to get the latest version of CWM or TWRP recovery that can be installed on your Sony Xperia U. Flash the custom recovery image on your phone as without the same you will not be able to complete this step by step guide.
  • Do use the latest version of the mentioned tools if you want to avoid the unpleasant situations.
  • Backup the data from the internal storage memory of your phone. A wipe will be required or else CM11 will not run properly on your Xperia U. Unfortunately when wiping the system, all of your data will be erased. So, make a backup for saving everything that is important to you.
  • You can use free distributed backup and restore apps from Google Play for saving your contacts list, call logs, market apps, internet settings and so on.
  • Also, you can make a Nandroid backup which is indicated for saving and restoring the current ROM.
  • Of course on the update operation a computer will be required as on the same you will have to save the Android 4.4.2 firmware file and the Google apps package (you need to flash the Google apps separately).
  • On your computer you first have to deactivate all the security programs or else you might have some problems while downloading the mentioned files.
  • Also, on your phone you need to check the USB debugging box, or else you won’t be able to properly connect the Xperia U with your computer; so go to “menu – settings – developer options” and enable the mentioned option.
  • If your phone has less than 60% power left it is recommended to plug in the charger before going any further; you can brick your phone in case it gets turned off in the middle of the update operation.
  • This tutorial is compatible only with the Sony Xperia U. So, don’t use this version of CM11 Android 4.4.2 Custom ROM firmware in case you own a different or similar Android based device.

How to Update Xperia U to Android 4.4.2 with CM11 Custom ROM Firmware

  1. Download the CM 11 Android 4.4.2 firmware file from here.
  2. Download Google apps package from here.
  3. Save both files on your computer, preferable on desktop.
  4. Don’t unzip any of the downloaded files.
  5. Up next connect your Xperia U with the computer via USB cable.
  6. Take the downloaded files from computer and place the same on your phone’s SD card.
  7. Then unplug the USB cord and turn off your device.
  8. Enter your Xperia U in recovery mode.
  9. From there first wipe the system and clear cache.
  10. Just select “wipe data factory reset”, “wipe cache partition” and “wipe dalvick cache”.
  11. Return to main menu of recovery as you need to flash the ROM.
  12. In order to do so select “install zip from SD card” followed by “choose zip from SD card”.
  13. Pick the Android 4.4.2 KitKat file and flash CM11 on your Xperia U.
  14. Similar, repeat the procedure described and flash Google apps package on your device.
  15. In the end, from recovery select “reboot system now” and you are done.

So that was all for today as you have successfully completed this step by step guide. So, now your Sony Xperia U has been updated to Android 4.4.2 KitKat OS. You should test the CM11 custom ROM as you need to see how the software performs on your Android device. Of course, we will appreciate if you can share your experience with us and with other users too; just use the comments field from below and feedback us with your thoughts – we will assist you as soon as possible.

Sony Xperia U Articles

  • SRV

    any bugs???

  • Suvendu Kr

    How to take screenshots after flashing the ROM ?