this happened to me too. heres what you do read all the steps before you do it
first go ahead and charge you phone just plug it into the wall then follow these directions
1.) start suess and continue like you normally would
2.) remove your battery cover and leave it off
2.) when you get to the step that asks you to plug in your phone, connect your phone via usb to you computer, then hold the down volume button + the power button + while you are holding these buttons push the soft restart button* do this all at once and do not let go of any of the buttons until you see the white screen with the sony ericson logo and it should update like normal.
*to get to the soft restart look at the back of the phone with the battery cover off, now pull out the stylus right there next to you camera where you stylus came out is a little button push it with your stylus.
this worked for me when i thought i bricked my phone and it worked, so good luck and tell me how it works out
palm treo 600 > ppc6700 > ppc6800 (mogul) > htc diamond > asus p565 > xperia x2 > dell lightning?