Share your experience!
I'm currently updating my xperia p then accidentally unplug the usb connector.. when i was about to open my phone,it cannot anymore.. any help? thanks a lot..
can u say it bit precisely? is it you pulled off the usb cable from your phone and the update was interrupted in the middle and the phone is not turning on now??
yes
yes exactly
Assuming that your phone is not at all dead and when you turn on, atleast SONY logo is appearing.
Repairing it using SUS(Sony Update Service). http://www.sonymobile.com/gb/tools/update-service/
If it is not even turning on and showing SONY logo, try updating as usual, if SUS is not recognizing your phone it is better to go to your nearest sony service center.
thanks 
Try and let me know if everything is fine 