Please read this if you considering unlocking the boot loader or rooting your phone.
Please note that you may void the warranty of your phone and/or any warranty from your operator if you unlock the boot loader. You should only unlock the boot loader of your phone if you are an advanced user with good knowledge of the technology and risks involved.
For more information go here http://unlockbootloader.sonymobile.com/
Please also note
The Sony Xperia support team will not be able provide any support, related to unlocking the boot loader or rooting your phone.
We also recommend you to read the below blogposts.
Sony Xperia support team
2013-01-23 03:50 PM
I installed a custom rom and now if i boot it is stuck on SONY logo. I dont know how to get in recovery, and i cant use my pc because my usb input in phone is broken. What should i do? I did install CWM. I have a MT15I with firware Android 4.0
2013-01-24 01:07 PM
CWM gets wiped off after installing a new ROM
However see if it's still there, upon restarting see if the LED turns blue ?
If not then > you have no choice but to get the USB port repaired.
That would be the only way
2013-01-24 04:40 PM
Yes you need to send it to Sony.
Press any hardware key when you see blue led and see what happens. Do you enter CWM
2013-01-24 07:24 PM
hhamzah99 For your info, warranty is not covered in such cases ( physical damage )
Service centre would charge you
Contact Sony in your country, they shall help you with everything