my android first is SONY XPERIA neo L , and I will share how to root XPERIA Neo L.first you must download
 MT11i_4.1.A.0.562_kernel.ftf (kernel neo v) here  for use to root acces,and 
MT25i_4.1.B.0.631_KERNEL ONLY.ftf here for reflash to kernel neo l,and than
 DooMLord Rooting Tools here its file for push to neo l system,extrac this file, and than  
flash tools to flash neo l using this software compatible with windows 64/32bit.
put  
 - MT11i_4.1.A.0.562_kernel.ftf (kernel neo v)
 - MT25i_4.1.B.0.631_KERNEL ONLY.ftf
  to c:/flashtool/firmwares
go to setting >> developer options >> check list :
 - USB debugging,
- Stay Awake
- Allow mock locations.
steep:
- Turn off your Neo L.
- Click Icon Flashtool on your PC for Activating.
- Click Flash icon at upper left, choose Flashmode.  
    klick ok
4. 
Choose MT11i, Do not check anything, Click OK.
 5.
Press and hold key  “back” on your  Neo L, plug in USB cable to PC --> Flash running, lift up your  finger  from  key “back”.
6.
Flashing MT11i is finish if there is not “RED LINE WORDS” on 
Flashtool window and at the last words  tell you “Device Connected in 
Flash Mode”
7.
Close Flashtool on your  PC.
Unplug USB Cable from Neo L and PC,wait fo 3 seconds, push and hold 
key ”power” on your Neo L untill vibrate and the led blink orange color.
8.
Plug in USB to your Neo L – and to  PC. Find 
Doomlord folder  in your download open it, click “runme.bat”
-Follow all instructions ‘till Pushing file running  then you’ll see “ ALL DONE” on your PC.
9.
Unplug USB cable from Neo L, unplug  the battery from Neo L, wait for 5 seconds,  plug the battery back.
10.
Open Flashtool on your PC again same steep flash kernel, but :
you Choose 
4.1.B.0.631 KERNEL ONLY, Do not do check anything just click OK.
Rooting is succesfully when you see on appdrawer/home screen “Superuser icon”.
Thx for