Xperia so-02c has a black screen since updating

Question

Hello,
I agreed to an Android update from Sony on 08/18/2012. It told me I needed to charge my battery before the update, so I did (although not fully) everything progressed fine until my phone powered off. Since then it hasn't powered back on. This is the first update I’ve ever agreed to, needless to say if I’d thought this would happen I wouldn’t have agreed to Sony’s download.
Originally I could hold the power button down and the phone would still vibrate, but nothing else would happen. When I plugged it into the computer and then pressed the back button the green light would come on.  I've re-updated the phone using PC companion, and Update Service. I have both the Update, and the Factory Reset + update options. Each time the software on my computer told me the update was successful. Now when I hold down the power button the LED will flash red three times, no matter how long I hold it there is no longer any vibration. I have also tried holding down the power/volume up (and down) buttons, but the screen continues to ignore me. The screen has never showed no signs of life since the update. When this whole things started the phone was low on memory. When I plug the phone into the charger it blinks red at a steady pace before turning a solid green; I have not seen any other colors than red or green from the LED since this all began. I have tried all of the above with the SD and SIM card in, one in and one out, vise versa and both out. I don’t know if the phone is unlocked; I’m assuming at this point that it’s bricked
It's a Japanese phone from Docomo but I've been using it in Canada without any problems. I’ve had no battery problems and the screen was functioning fine until all of this started. I bought the phone two months ago but I have no warranty.
I would certainly appreciate any help you can offer.

Answer 1

Try letting the phone charge for a couple of hours and then run the software repair option in PCC. If it doesn't help it needs to be examined at an repair center to get it fixed. Contact your local support team to check if they might be able to help you.
http://www.sonymobile.com/global-en/support/contact-us/contact-info/
 - Community Manager Sony Xperia Support Forum
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