Originally Posted by Tech N You
You are always told to backup data via CWM and Titanium backup!
It won't work now until you reflash your stock ftf
Re-Flashing your stock ftf will delete all DATA IN YOUR INTERNAL MEMORY AND ALL APPS STORED DATA!
Actually, you are wrong, if he unlocked his phone withouth a backup of his TA he loses bravia engine permanently even after relocking bootloader..
If that happened, there's nothing you can do, and don't try anyone's TA backup as that will brick your device.