Update & Root Sony Xperia Arc / Arc S on Official Android 4.0 ICS

Sony is too choosy to bring the Android 4.0 ICS update to their phones, but they’re surely doing based on their schedule, after proper public and developers testing. In fact, this idea is great, as they come to know through the present bugs, and they fixed for final version of the update. Recently, Sony has brought the Android 4.0 ICS Update for their 2011 line of phones, including Xperia Arc, Arc S, Neo V, and Xperia Ray. We already written tutorial on upgrading to ICS Beta Firmware, now some of the phones blessed with final version of ICS ROM officially.

Currently, this Tutorial will you to upgrade your Sony Xperia Arc LT15i and Arc S LT18i phones. As of now, the update is made available in some countries, while others has started receiving. If you are unable to update via OTA, and you are still waiting for arrival of OTA ICS on your phone, then you can apply the update right now, at least if you will follow the tutorial, you will be able to root it also easily.

Disclaimer: This is official update, and it will not void warranty. Meanwhile, you should follow the every step carefully mentioned in this tutorial, so at the end, you will also get Root access along with Update. Though, Rooting section would void your warranty for sure, and also your phone can get bricked, damaged, during the procedure. We at TechClap.com should not be held responsible for any damaged caused to your Sony phone by following this tutorial.

Pre Requisite:

  • You will need latest drives installed in your PC, data cable is also required to connect phone to the PC.
  • We recommend you to make a full backup of your phone. You should Backup SMS, call logs, contacts, songs, videos pics, and all personal files, internet access points and MMS settings, as well as other settings.
  • Make sure to charge your Sony phone to at least 80% so that your phone do not face power problem during the process.
  • Turn On USB debugging on your Device. Navigate to the “settings>Application>Development>USB debugging” and check the USB debugging option.
  • Disable all the Antivirus or Firewall Apps to eliminate the possible conflict.

Assuming that you’ve followed the requirements above, and have arranged same, now let’s proceed to the next section with detailed Instructions to update your Sony phone to ICS, and also get Root Access on official firmware.

How to Update/ Install Sony Xperia Arc / Arc S on Official Android 4.0 ICS (Ice Cream Sandwich) Firmware Manually

Step 1: Download Flashboot tool. Download Link. Save it to your computer, then navigate to the directory where you have saved the file. Then find and open ‘Drivers’ folder.

Step 2: Now, run ‘Flashtool-drivers’ to Install, you should see the two options, which will say, “Arc-Play-Neo-Acro ADB Drivers’ and ‘Flashmode Drivers’, select both the options, as we need to install the drivers. You should wait for few time, until setup gets finished, and ignore all the error messages displayed in the meantime.

Step 3: Now, you can Download Official Android 4.0 ICS Firmware for your Sony Device, and save it to your computer. Download Link.

Step 4: After downloading the file (in Step 3), simply change the extension of downloaded file from ‘zip into .ftf (required).

Step 5: Now, you should copy this file, to same folder where you have saved the Flashtool (in Step 1).

Step 6: Click on ‘FlashTool’ to run the tool, and select ‘Flash’ option when it displays. After that, a Window will open, where you have to select ‘Flashmode’ and confirm same with selecting ‘Ok’.

Step 7: Now, on the screen, you will be able to select your Device model, Please select carefully. Then Click ‘Ok’.

Step 8: Now, connect the phone to Computer via USB Cable. Firstly connect USB cable to computer, and then connect USB cable to phone while pressing and holding ‘Back’ key. This will install Android 4.0 ICS Firmware on your phone. You should wait until the process finishing the installation. You didn’t need to wipe the Old ROM, as this if official one.

Step 9: Now, you can safely disconnect phone from the computer.

Step 10: Now, simply Reboot the phone, and after reboot you should enjoy Android 4.0 ICS Firmware on your phone.

If you have successfully Installed ICS on your phone, then you probably want to root your device as well. We’re here providing you quick instructions for Rooting of you Sony Device.

Steps to Root Sony Xperia Arc and Arc S on Official Android 4.0 ICS Firmware

Step 1: It is must to Install ADB on your computer, if it is not installed, you can Install and Download it. Download Link.

Step 2: Now, you can proceed to download Root Package, and save it to folder.

Step 3: Connect the phone to computer, and Copy the file you downloaded in Step 2, to the root of SD card.

Step 4: Fastboot should be installed. (See ICS Update section above). Then you must download Kernel, which is needed to flash the root package. Download Link. Now, you must copy the Kernel file to the same folder of ‘Fastboot’.

Step 5: Now, you can connect the USB Cable to computer, then hold the Menu Key of phone, and while holding connect it to Computer.

Step 6: On the Computer, open the Command Prompt. Then in Command Mode, visit the folder with command ‘cd c: fastboot), and then run the command ( fastboot boot ARC-DooMKernel-ICS-BETA-v04-lower-boot.img ). This will flash the Kernel on your phone. The phone should be get reboot automatically on this stage.

Step 7: After the reboot, when you see ‘Sony’ logo, and Blue LED lights up of the phone, begin pressing the ‘Back’ button continuously. This will put your phone into Clockworkmod Recovery mode.

Step 8: After entering the recovery, you should select the option ‘install zip from sd card’ followed by ‘choose zip from sd card’. You have to browse and select the file ‘Superuser-3.0.7-efghi-signed.zip.

Step 9: Confirm this operation to install, and then go back to recovery mode menu. Now reboot the phone by selecting ‘Reboot System Now’ option.

Step 10: It is need to install ‘Busybox tool’ on your smartphone, which can be downloaded from Google Playstore.

We hope you have installed Android 4.0 ICS successfully and also rooted your Sony Xperia Arc and Sony Xperia Arc S running on Official ICS Firmware.

Update & Root Sony Xperia Arc / Arc S on Official Android 4.0 ICS, 7.0 out of 10 based on 3 ratings

One thought on “Update & Root Sony Xperia Arc / Arc S on Official Android 4.0 ICS

  1. Hi,
    I am from India, meaning the offitial update is not available.
    I installed using flashtool and didn’t root my phone.
    Everything went off well, and its running smoothly.
    The only issue which I am facing is that my message center number is gone!
    I do have the number with me, but unable to see any option in message settings for defining it.
    One of the way to do it is to go to service operator settings by pressing *#7378423#*#* as given on unlockbootloader.sonymobile.com, however that is not running as a code instead phone is dialing it as number. (On GB I was able to access that).
    Any other way to define it using some editor or anything else?
    Please, I don’t want to go back to GB for this again!

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