Los mensajes en concreto que obtengo son:
10/049/2013 18:49:10 - INFO - Device disconnected
10/049/2013 18:49:28 - INFO - Selected MT11i_4.1.A.0.562_kernel.ftf
10/049/2013 18:49:28 - INFO - Preparing files for flashing
10/049/2013 18:49:28 - INFO - Please connect your device into flashmode.
10/049/2013 18:49:36 - INFO - Opening device for R/W
10/049/2013 18:49:37 - INFO - Start Flashing
10/049/2013 18:49:37 - INFO - Processing loader
10/049/2013 18:49:37 - INFO - Checking header
10/049/2013 18:49:37 - INFO - Ending flash session
10/049/2013 18:49:37 - ERROR -
10/049/2013 18:49:37 - ERROR - Error flashing. Aborted
10/049/2013 18:49:38 - ERROR - Drivers need to be installed for connected device.
10/049/2013 18:49:38 - ERROR - You can find them in the drivers folder of Flashtool.
10/049/2013 18:49:39 - INFO - Device connected in flash mode