How can I root my Sony Ericsson Xperia Arc S? I tried using Flash Software, but it doesn't work for me.

I may have used the wrong version or my process is wrong.

Can anyone tell me the correct process?


Android Version : 2.3.4 
Model Number : LT18i
Build Number : 4.0.2.A.0.62
For most of Sony Ericsson Xperia devices, you can use Flashtool.

currently at version v0.9.10.1, last updated on 07/01/2013

There's a guide on how to use this software over at XDAs, that I've used to prepare the instructions that follows.



STEP 01 :: Requirements:


A computer running Windows, Linux or MAC;
The Sony Xperia device;
The appropriated cable to connect it to the computer.




STEP 02 :: Install Flashtool and perform all updates to it:

Refer to the installation instructions and software download on the Flashtool website, tab "installation".


  Windows version:
  
  
  Install the full install Flashtool 0.9.10.1 package
  Apply the latest update (each update is cumulative)
  Updates will not be functionnal if full 0.9.10.1 is not installed
  
  
  Linux version:
  
  
  Unpack the tar.7z package
  Check that libusb-1.0 is installed. On 64bits system, both
  64bit and 32bit should be installed.
  Add these rules to /etc/udev:

SUBSYSTEM=="usb", ACTION=="add", ATTRS{idVendor}=="0fce", ATTRS{idProduct}=="*", MODE="0777"

  Apply the latest update (each update is cumulative)
  Updates will not be functionnal if full 0.9.10.1 is not installed
  
  
  Mac version:
  
  
  Open the dmg package Copy the Flashtool App to Applications folder.
  It will not run right from the dmg package
  Apply the latest update (each update is cumulative)
  Updates will not be functionnal if full 0.9.10.1 is not installed
  




STEP 03 :: Root your Sony Ericsson Xperia Arc S:

Refer to the tutorial at XDAs.


Start Flashtool


Connect the device to the computer and wait until it's recognized
Click the icon with the "Padlock [the second in a row]
Flashtool will start pushing files, wait till it finishes. Meanwhile the phone will reboot once.
When it's over Flashtool will notify "Root Access Allowed"


On your phone, open the application list and search for the app "Superuser".



For Troubleshooting, you can refer to common situations on the Flashtool website, tab "FAQ".