el mismo que a ti, ya lo he leido antes, tengo marcados los drivers Xperia S, flashmode y flashboot, pero nada, estoy harta de hacer lo mismo
13/025/2012 21:25:02 - INFO - Selected Xperia S_6.0.A.3.73_Generic CE1.ftf
13/025/2012 21:25:02 - INFO - Preparing files for flashing
13/025/2012 21:25:22 - INFO - Please connect your device into flashmode.
13/025/2012 21:25:31 - INFO - Opening device for R/W
13/025/2012 21:25:31 - INFO - Start Flashing
13/025/2012 21:25:31 - INFO - Flashing loader
13/025/2012 21:25:31 - INFO - Ending flash session
13/025/2012 21:25:31 - ERROR -
13/025/2012 21:25:31 - ERROR - Error flashing. Aborted
13/025/2012 21:25:33 - ERROR - Drivers need to be installed for connected device.
13/025/2012 21:25:33 - ERROR - You can find them in the drivers folder of Flashtool.
13/025/2012 21:25:45 - INFO - Device disconnected
13/025/2012 21:25:50 - INFO - Device connected with USB debugging off
13/025/2012 21:25:50 - INFO - For 2011 devices line, be sure you are not in MTP mode
Lo he copiado de tu post, yo no se pegarlo pero pone exactamente igual. Tengo xp y el pc companion, he probado con lo de usb marcado y sin marcar....no se que mas hacer aparte de mandar el Xperia a ....