Rooting Sony Xperia S ICS 4.0.4

Rooting Sony Xperia S ICS 4.0.4
Pre-requirements:

• Backup the phone ( guide in here)
• Fully charge the phone
• Install android adb drivers
• Unlock the bootloader in here: http://www.thespicygadgematics.com/2012/05/how-to-unlock-sony-xperia-bootloader.html
• Enable USB debugging

Downloads:

• Pre-rooted system.img in here: https://docs.google.com/file/d/0B3l36qXIC0HdeEhYM3pZV2JrNDg/edit?p
  li=1
Flashtool in here: http://androxyde.github.com/Flashtool/ 

Note!

Rooting void your phone's warranty. After unroot and re-lock the bootloader again you can claim the warranty. If your device bricked by following this Xperia S root method, I can't get its risk.

Instructions:

• Download and install latest flashtool on your computer.
• Copy downloaded pre-rooted system.img file into the flashtool installed location

"firmware" folder.

• Rename the copied file as "system.img" without quotes.
• Run the flashtool and click its "Thunder" symbol.
• Mode selector tick "fastboot mode"
• In the "Fastboot Toolbox" window click "Reboot into fastboot mode (via ADB)" (If Your Phone Turn On. If not, Just Power+Volum Up)
• After phone connected via fastboot mode, click "Select system to flash"
• In the choose system file locate the downloaded "system.img" file and click "Open"

button.

• Wait for a few second to complete the installation. When flashtool display "Before

reboot check for the log status".

• Click "Reboot device into system".

Now your phone reboot with the root permission.