Recently, Sony made available the long promised mid-April release of the Ice Cream Sandwich OS update for its Xperia Arc, Arc S, Ray and Neo V smartphones. The firmware can be OTA (Over The Air) received, or can be installed manually, as it is available only for some Nordic countries. You can learn how to manually install the official Android 4.0 update on your Arc and Arc S by following our previous step by step guide where you have the proper procedure detailed and explained.
Now, after applying the update maybe you will want to really take advantage of your handset and of its performances. So, you might consider in flashing a custom ROM into its system. But, in order to do so you must first learn how to root the Sony Xperia Arc, or Xperia Arc S that runs the latest and official Android 4.0 Ice Cream Sandwich firmware. That’s exactly what I will be teaching you today. So keep reading and see whether or not you have what it takes to complete this tutorial.
First of all, you must know that rooting your Xperia phone will make you lose the Sony warranty. This is happening because you will unchain the system from the factory restrictions. Also, the present guide can be applied only for the handsets that have an unlocked bootloader. You can see how to unlock it by checking the Sony’s webpage from here. The warranty can be restored only if you decide to re-lock the bootloader, but then the root access will be revoked.
Furthermore, don’t use this tutorial for rooting similar devices that runs the ICS software because you can wreck your phone. This operation can be performed to both Arc and Arc S because they are two similar handsets and there is no major difference between their internal systems.
As precaution, backup the data, apps, and any other personal info from your phones. It will be really bad to lose something important. Take a look over the following links:
- Download SMS backup and restore.
- Save contacts by syncing with Google.
- Download call log backup and restore.
Use a computer or even the SD card for saving any other data. Now, after seeing how to perform a backup let’s see the other stuffs that must be considered.
- Make sure you have access to a computer for downloading the tools needed for the root process.
- Charge your handset.
- Unlock the bootloader.
- Enable USB debugging from your phone. Go and check if the option is checked up from the path: “Settings -> Applications -> Development -> USB debugging”.
- The security tools installed on your device and on your PC must be deactivate. You can restore it after you finish with this procedure.
Well, those were the preparations tasks. Now we will begin the actual tutorial. Don’t worry is not hard to handle, but you must do all exactly as described.
How to Root the Xperia Arc and Arc S that runs Official Android 4.0 ICS Firmware
- On the computer ADB must be installed. For this you must download and install the Android SDK from here.
- Then, you have to download the actual root package. Get it from here and place it to the computer. Copy the same from the PC to the phone’s SD card.
- Also download the kernel (from here) needed for flashing the package.
- Download fastboot and extract the same (on the PC).
- Copy the kernel downloaded before to the same folder as Fastboot. In the end, your folder should have the files showed in the image from below.
[caption id="attachment_3287" align="aligncenter" width="335" caption="The list of files you need to have on your PC"][/caption]
- Take the USB cord and plug it to the computer.
- Then, take the phone and while holding the Menu key (key at the bottom right on your Arc/Arc S) connect it to the USB cable.
- On the PC open command prompt. You can do this by following: Start -> run -> cmd.
- In cmd go to the fastboot folder (for example cd c: fastboot) and then type the command: fastboot boot ARC-DooMKernel-ICS-BETA-v04-lower-boot.img.
- Now the kernel will get flashed on your phone.
- The device should reboot on its own.
- When it does and as soon as the Sony logo shows up and the blue LED lights up, start pressing for several times the “Back” button on the phone.
- The Clockworkmod Recovery mode should be displayed. If not, repeat the previous step.
- On the recovery menu select “install zip from sd card” and “choose zip from sd card”. Select the Superuser-3.0.7-efghi-signed.zip file.
- Confirm and allow the installation process to begin.
- When finished go bak to the recovery mode menu.
- Select “reboot system now”.
- That was all, but for a full root you should go on the Google Play market, search for the busybox tool and then install the same on your smartphone.
That should be all for today. So after we have showed you how to update your Sony Xperia Arc and Xperia Arc S with the official Android 4.0 ICS OS you now know how to root your device too. Do tell us how things worked for you, or if there were any kinds of problems. I hope that everything went as planned.