I have buyed a Xperia Z Ultra. One day I let the battery drain, (you know) 1%, then shutdown. Very normal.
I place it on the charger and I go away from it. A few hours later I come back and there's no red or green light anymore. It won't boot either. And when I waite a min. and put it on the charger again, there's a red light that burn for 5 seconds, and it's gone. Every time again.
When I put it on my computer, he see the device. But Sony PC Companion don't see it. I can't get into flashmode or fastbootmode...
My friend have buyed a new battery, but also this don't work.
What can I do?
