don't panic
plug in usb cable
second hold down power button and volume up for 8 seconds (hard reset I'm told)
wait an hour
hold down power button 10-15 sec and open flashtool kept pc connect to tab with usb cable, and after 15 minuts in flashtool appear a message: Device connected in flash mode,or if u have patience try this :Here's what I did, took allot of patience, so be prepared to try a bunch of times!
1. Unplug the usb cable
2. hold both vol + and - (I know this is not documented but stick with me here), then press and hold the power button until the led flashed "white" "3 times" (u will see one white flash, then after about another 20 seconds a second set of white flashes will begin, it will blink 3 times)
3. Plug in the usb cable
4. Make sure you have emma/drivers setup, since this is a windows only (boo!) tool you should here the usb device plug notifiction that it detected the "S1 Service Sony Mobile Communications AB"
This only lasts about 1 minute before it will go back to red led, launch emma and restore a stock image from sony, after its done, unplug the device, and hold power, it should come back to life! suerte amigo no te rindes.