How can I root Sony Xperia U and upgrade it to Icecream Sandwich?

Vinay Kumar July 27, 2012
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I recently bought a Sony Xperia U phone. I am entirely new to Android rooting. I have two doubts regarding my device:

1) How to update Android Gingerbread(2.3) to Icecream Sandwich (4.0)?
Ginger Bread is installed on my Sony Xperia U.
I want to upgrade to Icecream Sandwich (4.0), so can I know the complete procedure to upgrade? Do all phones have a common procedure to upgrade?

2) How to root my device?
I will be very thankful to you if you can solve my problem.

I searched this all over internet and on many sites, but none of them were able to answer my questions. I’m completely hoping you can.

Please do reply with your valuable advice and suggestions to this email.

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  1. Jaspreet Dua
    November 10, 2012 at 10:16 am

    You can upgrade and root your phone too.
    First install Sony PC Companion on your PC. Then connect Your Phone and do as follows.
    After upgrading you should unlock the boot loader herehttp://developer.sonymobile.com/services/unlock-bootloader/
    and then download and install flash tool and go to link and download this zip file http://www.xdafileserver.nl/Files/Sony%20(Ericsson)/SE%20Xperia%20U%20(LT25i)/STOCK%20ROMS/Flashtool_Xperia2012.zip
    and extract to
    C:\Flashtool\devices
    and open flash tool. Go to settings and then into Devoloper options on the xperia u and tick usb debugging. Connect your phone to the pc and click on advanced tab then on root and then on force zergrush in flash tool. Thats it Your done.

  2. kishor annaldas
    October 16, 2012 at 1:13 pm

    How to upgrade my Sony Xperia u android 2.3.7 to 4.0 I C S

    • susendeep dutta
      October 17, 2012 at 3:10 pm

      4.0 update will start in phases and will come up in December of this year.So,set your phone to keep checking for updates.

  3. Aravind
    October 9, 2012 at 12:42 pm

    First you need to unloack BOOTLOADER

    unlockbootloader.sonymobile.com

  4. KUMARJIT KUNDU
    September 24, 2012 at 8:03 am

    HOW CAN I UPGRADE ANROID VERSION 2.3 TO 4.0 IN LAVA XOLO MOBILE?

  5. Rohan Sachdev
    September 22, 2012 at 1:56 pm

    1) Download Sony PC Companion on your computer
    2) Plug your phone into your computer using the USB cable supplied with the phone
    3) Let your phone be detected by the PC Companion
    4) If an update is available, it will notify you
    5) Follow the on-screen instructions
    That's for updating and I have no idea about rooting the phone.
    PS I have the same phone so the answer is pretty accurate, I guess.

  6. Jason
    September 9, 2012 at 10:56 am

    There is a official update to ics 4.0 coming very soon for xperia U.

  7. Christopher Harlan
    August 7, 2012 at 5:12 pm

    Check out the XDA forums: http://forum.xda-developers.com/showthread.php?t=1812531

    They always have some great stuff on there!

  8. UD98
    July 28, 2012 at 10:36 pm

    wait and see if there is an official update

  9. Vipul Jain
    July 28, 2012 at 6:23 am

    Since you are new to android world, wait for a few weeks or 1-2 months, Xperia U is in line to get an official ICS upgrade.
    So just follow some sony forums and goto your nearest service centre to get upgraded once it is out.

    Alternatively, if you want it now, and are not afraid of rooting/voiding warranty etc.
    Head over to XDA and search for your phone in the search option.

  10. Kannon Y
    July 28, 2012 at 12:51 am

    Hello Vinay, let me try and answer some of your very good questions
    (and please excuse any formatting errors that occur as a result of my
    poor HTML coding skills):

    1. Your particular phone does not currently have a method of upgrading
    to ICS without rooting and installing a custom ROM. I believe there are
    a few custom ROMS based on ICS on the horizon, however, but it may take
    some time before they begin appearing. I need to emphasize that right
    now the root methods used on your device are very easy to get wrong and
    will likely brick your device if improperly applied.

    Fortunately, it appears that a competent development team is hard at
    work on building custom ROMs. It's only a matter of time before the
    root process become extremely easy. Anyway, that said:

    The upgrade procedure for your Android version varies by manufacturer
    most frequently and also by individual device. These methods range from
    entering text in a command prompt to something as simple as a one-touch
    APK root installed from wtihin the Android GUI. Many of the phones in
    the Xperia series have similar root methods though, which is why a
    single root procedure works across multiple Xperia phones. However,
    despite the differences, there does exist a very loose methodology
    involves three basic steps:

    First, you want to get
    "root" privleges/access
    to the device in question. This particular
    devices requires unlocking the kernel in addition to getting root
    privileges.

    Second, you ABSOLUTELY must install
    a custom recovery
    . A recovery lets you "flash" (install) custom
    ROMs. It will also let you make backups (a MUST) of your existing ROM.
    It appears that the Xperia U's best method of getting a custom recovery
    is using Fastboot.

    Third, you flash the custom ROM/kernel.

    2. As mentioned above, root methods do exist for your device, but you
    should wait until these procedure become easier to manage, otherwise
    you may perma-brick your device.

  11. Dalsan
    July 27, 2012 at 11:53 pm

    Not all phones can be rooted or upgraded in the same way if you install custom roms. There aren't any all in one tools since each phone service provider uses different software and hardware from one another, and providers like AT&T like to lock down certain features so they aren't accessible to normal customers. Boot loader locks and other locks have to either be taken off or bypassed on some phones before even rooting the phone or installing roms. The link suggested for XDA Developers is a very good community and trustworthy. They have been working with hacking and making custom roms since the old Windows Mobile days (not Windows Phone series), and will try to do what they can for popular phone models. Any questions you may have about your phone can likely be found there.

    Rooting used to be easy with installing an app to your phone and it will do the work for you (when the first programs were available, but was hard before then as you had to alter a lot yourself to root), then went to installing or using a program on your computer to root your phone, to having to flash software to your phone.

    The best thing you can do after rooting is installing a custom recovery like Clockwork Mod. should anything happen, you have a good chance to "unbrick" your phone (reinstalling a ROM to make your phone work again if it failed to install properly the first time). It may be scary at first, and might not always take the first time, but try again as it may just need that extra push to get it going. I had the problem of thinking I ruined my phone, but tried 3 more times and finally it worked.

    All you really need to do is follow the instructions carefully, and read up on the roms you want to install to see if it may have issues that you may not want or it offers better than the stock performance and features.

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