esto me pone en el flashtool
21/028/2012 15:28:38 - INFO - <- This level is successfully initialized
21/028/2012 15:28:38 - INFO - Flashtool Version 0.8.0.0 built on 2012-05-27 21:57:12
21/028/2012 15:28:38 - INFO - You can drag and drop ftf files here to start flashing them
21/028/2012 15:28:48 - INFO - Device disconnected
21/042/2012 15:42:01 - INFO - Device connected in flash mode
21/044/2012 15:44:00 - INFO - Selected Xperia U_ICS 4.0.4_nu.ftf
21/044/2012 15:44:00 - INFO - Preparing files for flashing
21/044/2012 15:44:33 - INFO - Please connect your device into flashmode.
21/044/2012 15:44:33 - INFO - Opening device for R/W
21/044/2012 15:44:34 - INFO - Start Flashing
21/044/2012 15:44:34 - INFO - Flashing loader
21/044/2012 15:44:34 - INFO - Ending flash session
21/044/2012 15:44:34 - ERROR -
21/044/2012 15:44:34 - ERROR - Error flashing. Aborted
21/044/2012 15:44:34 - INFO - Device connected in flash mode
el movil actua como si no le pasara nada es decir se reinicia y tal pero se puede poner es flashmode
