Install Android 4.4.2 KitKat CM 11 Custom ROM on Sony Xperia U


Sony’s low end Android device Xperia U runs on Android 2.3 Ginger Bread out of the box, Sony updated the device to Android 4.0.4 Ice Cream Sandwich and made no further updates neither there’s any official word about it anymore. While Google has already rolled out Android 4.4 KitKat and many of the Android devices have already received the update to the latest and greatest version of Android, Xperia U owners may be appetently waiting for  further updates to their device, while there are no chances of anything officially, it paves a way for the custom ROMs and the users still have a chance to enjoy the higher version of Android on their devices unofficially.

Android 4.4.2 KitKat custom ROM based on CyanogenMod 11 is available for our beloved Xperia U. In the following post we are going to have a look on the method to install this custom ROM on the device. As this is a nightly build, it may contain a lot of bugs and may note be suitable for everyday’s use, so make sure that you’re doing it at your own risk and you actually know what you’re doing. If you’re not good with custom ROMs and  don’t have sufficient knowledge about flashing custom ROMs we recommend you not to install

Here are some pre-requisites and pre-cautions that you must follow before installing this ROM:


      1. This guide is only for Sony Xperia U. Do not try this on any other device. Please check your device’s model number in Settings > About Device.
      2. You must have installed Sony Flash Tool, also using Flashtool install Fastboot drivers and drivers for Sony Xperia U. Follow our detailed guide here.
      3. Your device’s battery should be charged at least over 60%. This is highly recommended in order to prevent any power issues during the flashing process.
      4. Make sure that you backup your important media content, ContactsCall Logs & Messages. This is highly recommended just in case something goes wrong and you need to reset your phone.
      5. Use only OEM data cable to establish connection between your phone and PC. Turn off your Anti Virus and Firewall to prevent any connection issues.
      6. Enable USB debugging mode on your phone, to do so, open Settings > Developer Options > USB debugging mode > Check it.
      7. If you already have rooted your device, use Titanium Backup to back up all your important apps + system data. Also if you are using a custom recovery, it is recommended that you backup your current system using that first. [Just for the sake of safety.]
      8. We highly recommend you to wipe your phone’s data, cache and dalvik cache, a clean install is always expected to give the best results.
      9. Alright! Go ahead and flash the custom firmware, follow this guide to the letter.

Let’s move forward to the 2nd page for flashing Android 4.4 KitKat, make sure that you read all the instructions explained above carefully.

Disclaimer: The methods involved in flashing custom roms and rooting your phone is highly custom and may result in bricking your device, and has nothing to do with Google or the device manufacturer that is SAMSUNG in our case. Also rooting your device will void its warranty and you will be no longer eligible for any kind of free device services by the manufacturers/warranty providers. In case of any mishap we may not be held responsible. Follow these instructions to the letter to avoid any mishap or bricking. Make sure that whatever you do, you are doing it at your own responsibility.

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


  1. I’m doing exactly as the article says. I’ve installed CWM Recovery. Placed both the files in the SD card. When I try to flash the ROM in the .zip format after wiping data and cache, I can’t install it. It says:
    E:Error in /sdcard/ *.zip
    (Status 7)
    Installation aborted.

    Can you help me with that?

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