How To Flashing Sony Xperia SP C5303

Sony XPERIA SP is a very powerful tool. At first glance, it has the same functionality as Sony XPERIA T etc. But there are some new features - Grove Mode, Color notification bar and its other improvements. Below you can find the latest firmware for phones Xperia SP.Immediately following his ways:1. How to Flash Android 4.3 Jellybean latest to Sony XPERIA SP C5303 
a) First of all, check your firmware version (if you already have the latest, you do not need this tutorial)
b) Download and install the latest Flashtool
c) Download the latest Android 4.3 Firmware for Sony XPERIA SP C5303 Here all sony firmware here
d) Paste FTF file downloaded in step c) to the folder "Firmware" in the folder Flashtool
e) Open Flashtool, click on the flash and select the firmware was downloaded, click ok. Important - if you do 
not want to delete the data from your phone, simply uncheck userdata.sin. All data will remain in your phone, but sometimes it can cause additional problems. So it is better (and I recommend) to perform a backup of your personal data, continue with the installation clean and then restore your personal data.
f) Turn off your phone and when Flashtool show pop-up window, connect the phone to the PC by pressing the volume down key until the Led green color appears
g) After a few minutes all done and you get new firmware phone

This is Full Tutorial :  How To Flashing Sony Xperia Via Flashtool