Jul 30, 2013 - STEP 02:: Install Flashtool and perform all updates to it. Can use the Root Checker Basic app available on google play store. Next download Sony Xperia Arc S CWM/TWRP added kernel in here. CWM Installer-v5.apk.

The procedure to install ClockworkMod recovery – which is a custom recovery used to install custom ROMs – on Xperia devices just got a lot easier and simpler thanks to RecoverX, a graphical user interface-based tool developed by XDA Senior Member that lets you install ClockworkMod recovery on almost any Xperia device with a few simple clicks of the mouse. Using Recover X is quite simple. As long as your device is rooted and is running on a stock Gingerbread or Ice Cream Sandwich ROM, you simply need to connect it to the computer, start up RecoverX, choose the version of recovery you want to install, grant it superuser access on the phone, and RecoverX does everything else automatically. What’s even better is that you don’t need to unlock the bootloader on your phone for this (except for newer devices such as Xperia S, P, U which do need an unlocked bootloader).

You can root the phone directly with no need for downgrading through this tool 'Eroot': 1- You need to have PC companion installed on your PC. 2- On your phone, Go to settings > Security > Mark 'Unknown sources' Settings > Developer options > Mark USB debugging Settings > Xperia > connectivity > USB connection mode >Kodi po guiv. select MSC mode 3- After marking the settings above, connect your phone to PC ( Skip PC Companion installation on your phone ) and wait for the adb drivers to be installed. You might need to disable your anti virus before this step. 4- Now, run the Eroot tool downloaded above -it's in Chinese i guess- you will see it's doing some downloading and then a Root button appears.

And Baam, your phone is rooted. Look for the SuperUser app in ur apps pages. Also for further check you can use the Root Checker Basic app available on google play store. If it somehow fails for the first time, give it another go.

Restart everything, your PC, phones etc. If it doesn't work at all, you might need to try the other method for rooting i.e: downgrade-root-upgrade. For the original post refer to: Credits go to 'Nabeel' the author of this method. Btw I have tried this method on my Arc S (and Windows 7), and it did work:). Easiest way is unlock the bootloader and install a CWM or TWRP added kernel.

Bootloader unlock wipe user data. Also rooting, unlocking bootloader voids the warranty. • First unlock the bootloader, following. • Download and copy SuperSU zip file into your SD card. • Next download Sony Xperia Arc S CWM/TWRP added kernel in. • Then install that kernel using flashtool, following.

• When the phone booting continuously press and release the volume down key. • In recovery go to 'install zip from sdcard>Choose zip from sdcard' and install the SuperSU zip file. • Select reboot system now. • That's all.