Problem rooting Xperia E Dual

I am following the below post to root my Xperia E Dual. > [How To Root Xperia E! Latest Update! (Locked Bootloader)\*LINKS > UPDATED* NOOB > GUIDE!](http://forum.xda-developers.com/xperia-j-e/general/how-to-root-xperia-e-update-locked-t2409525) In step 4 to install Framaroot APK we need to Check the option "Unknown sources" and "Usb dubugging" (in Developer options) But when I am turning on the Developer option Flashtool is showing an message like below: 08/048/2014 01:48:38 - INFO - Device connected with USB debugging off 08/048/2014 01:48:38 - INFO - For 2011 devices line, be sure you are not in MTP mode I have tried changing the Usb connection mode but problem is not resolved. Could you please help? **Some info:** Operating System Used to flash: Windows 8.1