30/038/2015 08:38:59 - INFO - Selected Bundle for Sony Xperia SP (C5303). FW release : 12.0.A.1.257. Customization : Customized_NCB
30/038/2015 08:38:59 - INFO - Preparing files for flashing
30/039/2015 08:39:02 - INFO - Device disconnected
30/039/2015 08:39:25 - INFO - Please connect your device into flashmode.
30/039/2015 08:39:31 - INFO - Device connected in flash mode
30/039/2015 08:39:31 - INFO - Opening device for R/W
30/039/2015 08:39:31 - INFO - Reading device information
30/039/2015 08:39:31 - INFO - Phone ready for flashmode operations.
30/039/2015 08:39:31 - INFO - Opening TA partition 2
30/039/2015 08:39:31 - INFO - Current device : C5303 - YT910L9KLE - 1272-3352_R1B - 1272-3352_12.1.A.1.207 - GLOBAL-LTE_12.1.A.1.207
30/039/2015 08:39:31 - INFO - Closing TA partition
30/039/2015 08:39:31 - INFO - Start Flashing
30/039/2015 08:39:31 - INFO - Processing loader.sin
30/039/2015 08:39:31 - INFO - Checking header
30/039/2015 08:39:32 - INFO - Flashing data
30/039/2015 08:39:37 - INFO - Loader : S1_Root_7054 - Version : R5G006 / Boot version : R11B023 / Bootloader status : NOT_ROOTABLE
30/039/2015 08:39:37 - INFO - Transfer buffer size : 32768
30/039/2015 08:39:37 - INFO - You must have the according fsc script to flash this device.
30/039/2015 08:39:37 - INFO - Flashing finished.
30/039/2015 08:39:37 - INFO - Please unplug and start your phone
30/039/2015 08:39:37 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

csak ennyi történik...
You must have the according fsc script to flash this device.
Van valakinek fsc script-je?? O.o