1.Download the three files from the download section below
2.open FlashTool and flash the XperiaS_LT26i_6.2.B.0.211_KernelOnly.ftf - 6.36 MB file, this is JUST the kernel of an older firmware which was rootable
3.now once flashing is done reboot device and connect to PC in usb debuggin mode
4.CLOSE FLASHTOOL <<< Very Very Very IMPORTANT STEP
5.extract the file DooMLoRD_Easy-Rooting-Toolkit_v18_perf-event-exploit.zip to root directory on c:\
6.Xperia should be in ON and connect with data cable with PC and execute runme_ file corresponding to your OS on desktop PC, WAIT FOR 3 MINUTES)this will execute a SPECIAL version of my easy rooting toolkit <<< VVVIMP STEP
7.the above step is crucial! if you use any older version of the toolkit then IT WILL NOT WORK!
8.after rooting is over the device will restart
9.you can verify if device is rooted by checking for SuperSU app (it is the newest version)
10.once thats done now power OFF your device and open FlashTool again
11.now flash XperiaS_LT26i_6.2.B.1.96_KernelOnly.ftf - 6.33 MB file to get back to the true kernel for the firmware
12.thats it after flashing is done just disconnect and power on device and enjoy rooted phone!
If you are facing issue of device rebooting when remounting /system partition then checkout
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