[Xperia SP Q&A, Help & Troubleshooting] Spasik:
I am attaching flashtool log when i try to flash ftf file

30/043/2015 21:43:15 - INFO - Flashtool Version 0.9.19.10 built on 04-10-2015 21:00:00

30/043/2015 21:43:15 - INFO - Executing search strategies to find proxy selector

30/043/2015 21:43:15 - INFO - No proxy found for IE. Trying next one

30/043/2015 21:43:15 - INFO - Strategy firefox failed trying next one : No Firefox installation found

30/043/2015 21:43:15 - INFO - No proxy found for java. Trying next one

30/043/2015 21:43:20 - INFO - Device disconnected

30/044/2015 21:44:02 - INFO - Selected Bundle for Sony Xperia SP (C5303). FW release : 12.1.A.1.205. Customization : Central Europe CE1

30/044/2015 21:44:02 - INFO - Preparing files for flashing

30/044/2015 21:44:09 - INFO - Please connect your device into flashmode.

30/044/2015 21:44:16 - INFO - Device connected in flash mode

30/044/2015 21:44:16 - INFO - Opening device for R/W

30/044/2015 21:44:16 - INFO - Reading device information

30/044/2015 21:44:16 - INFO - Phone ready for flashmode operations.

30/044/2015 21:44:16 - INFO - Opening TA partition 2

30/044/2015 21:44:16 - INFO - Current device : C5303 - YT910R1KYB - 1272-3352_R1B - 1272-3352_12.1.A.1.207 - GLOBAL-LTE_12.1.A.1.207

30/044/2015 21:44:16 - INFO - Closing TA partition

30/044/2015 21:44:16 - INFO - Start Flashing

30/044/2015 21:44:16 - INFO - Processing loader.sin

30/044/2015 21:44:16 - INFO - Checking header

30/044/2015 21:44:16 - INFO - Flashing data

30/044/2015 21:44:21 - INFO - Loader : S1_Root_7054 - Version : R5G006 / Boot version : R11B023 / Bootloader status : ROOTED

30/044/2015 21:44:21 - INFO - Max packet size set to 64K

30/044/2015 21:44:21 - INFO - Making a TA backup

30/044/2015 21:44:21 - INFO - Opening TA partition 1

30/044/2015 21:44:21 - INFO - Start Dumping TA partition 1

30/044/2015 21:44:27 - INFO - Finished Dumping TA partition 1

30/044/2015 21:44:27 - INFO - TA partition 1 saved to C:\Users\SpAsI\.flashTool\registeredDevices\YT910R1KYB\s1ta\2015-12-30_09-44-21\1.ta

30/044/2015 21:44:27 - INFO - Closing TA partition

30/044/2015 21:44:27 - INFO - Opening TA partition 2

30/044/2015 21:44:27 - INFO - Start Dumping TA partition 2

30/044/2015 21:44:29 - INFO - Finished Dumping TA partition 2

30/044/2015 21:44:29 - INFO - TA partition 2 saved to C:\Users\SpAsI\.flashTool\registeredDevices\YT910R1KYB\s1ta\2015-12-30_09-44-21\2.ta

30/044/2015 21:44:29 - INFO - Closing TA partition

30/044/2015 21:44:30 - INFO - No flash script found. Using 0.9.18 flash engine

30/044/2015 21:44:30 - INFO - Opening TA partition 2

30/044/2015 21:44:30 - INFO - Writing TA unit 00002774. Value : [01]

30/044/2015 21:44:30 - INFO - Closing TA partition

30/044/2015 21:44:32 - INFO - Processing partition-image.sin

30/044/2015 21:44:32 - INFO - Checking header

30/044/2015 21:44:32 - INFO - Flashing data

30/044/2015 21:44:36 - INFO - Opening TA partition 2

30/044/2015 21:44:36 - INFO - Closing TA partition

30/044/2015 21:44:37 - INFO - Opening TA partition 2

30/044/2015 21:44:37 - INFO - Processing amss_fsg.sin

30/044/2015 21:44:37 - INFO - Checking header

30/044/2015 21:44:37 - INFO - Flashing data

30/044/2015 21:44:39 - INFO - Processing amss_fs_1.sin

30/044/2015 21:44:39 - INFO - Checking header

30/044/2015 21:44:39 - INFO - Flashing data

30/044/2015 21:44:41 - INFO - Processing amss_fs_2.sin

30/044/2015 21:44:41 - INFO - Checking header

30/044/2015 21:44:41 - INFO - Flashing data

30/044/2015 21:44:42 - INFO - Processing apps_log.sin

30/044/2015 21:44:42 - INFO - Checking header

30/044/2015 21:44:42 - INFO - Flashing data

30/044/2015 21:44:44 - INFO - Processing cache.sin

30/044/2015 21:44:44 - INFO - Checking header

30/044/2015 21:44:44 - INFO - Flashing data

30/044/2015 21:44:48 - INFO - Processing fotakernel.sin

30/044/2015 21:44:48 - INFO - Checking header

30/044/2015 21:44:49 - INFO - Flashing data

30/044/2015 21:44:52 - INFO - Processing kernel.sin

30/044/2015 21:44:52 - INFO - Checking header

30/044/2015 21:44:52 - INFO - Flashing data

30/044/2015 21:44:57 - INFO - Closing TA partition

30/044/2015 21:44:57 - INFO - Opening TA partition 2

30/044/2015 21:44:57 - INFO - Processing system.sin

30/044/2015 21:44:57 - INFO - Checking header

30/044/2015 21:44:59 - ERROR - Processing of system.sin finished with errors.

30/044/2015 21:44:59 - INFO - Ending flash session

30/044/2015 21:44:59 - ERROR -

30/044/2015 21:44:59 - ERROR - Error flashing. Aborted

30/044/2015 21:44:59 - INFO - Flashing finished.

30/044/2015 21:44:59 - INFO - Please unplug and start your phone

30/044/2015 21:44:59 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

30/044/2015 21:44:59 - INFO - Device connected in flash mode

30/045/2015 21:45:00 - INFO - Device disconnected

30/045/2015 21:45:03 - INFO - Device connected in flash mode

30/045/2015 21:45:46 - INFO - Device disconnected