Fixist

Warning: Do this on your own risk, I don't have any responsibility to whatever the result of the flashing. I've been doing this restoration many times and it works for me. If you are using Cyanogenmod Custom ROM, it will be easy for you to restore your phone to Stock Rom. Requirements : Sony Mobile Flasher , USB Connector and a PC or Laptop, Sony Xperia SP Stock ROM Step 1: Turn Off your Cellphone Step 2: Open Sony Mobile Flasher Third: Flash the Sony Xperia SP Stock ROM Fourth: Wait for the Files to Load and then hold the volume down and insert the cable Fifth: If the flash started you can now release your finger from the volume down and wait till the flash finished. After the Flashing is done remove the cable and turn on your cellphone, it will take time to load just wait for a few minutes. To Root you Xperia SP just download Towel Root . Make Sure you are connected to the internet to make the app work. Then manually install the Superuser/SuperSU.

Warning: This could be risky and might brick your phone, do this at your own risk. Before installing custom ROM, your phone must be rooted. How to Root Xperia SP Step 1. Download Towel Root , make sure you are connected on the internet. Step 2. Once you are rooted, download CWM Recovery for Xperia SP Extract the Zip > Open Folder > Connect you phone and turn on the USB debugging on developer mode > run the install.bat inside the folder, make sure to run as administrator > Follow the instruction Step 3. Your Phone has now a CWM Recovery which you could install custom ROM Step 4. Download Cyanogenmod for Xperia SP choose the nightyl version of cyanogenmod. Step 5. After downloading the custom ROM, copy the zip folder to your SD card. Restart your phone > After the Xperia SP logo, press and hold volume up to go to recovery mode > on recovery mode choose the "update from zip" and locate the zip folder on you SD card then Update