[Sony Xperia T, TL, TX, V] devilmaycry2020:
Hi all

My phone soft bricked, i use flashtool to flash stock rom, i boot the phone to flashmode and flashtool detects it.

but after some second it eventually stops flashing because my phone would reboot. tried repeating the process again and again but the phone keeps rebooting.

any ideas on how can i fix this myself or do i really need to go to a technician.

here is the log file

09/045/2015 22:45:01 - INFO - Device connected in flash mode
09/045/2015 22:45:04 - INFO - Device disconnected
09/045/2015 22:45:20 - INFO - Device connected in flash mode
09/045/2015 22:45:57 - INFO - Selected Bundle for LT29. FW release : 9.2.A.1.215. Customization : HK
09/045/2015 22:45:57 - INFO - Preparing files for flashing
09/046/2015 22:46:03 - INFO - Device disconnected
09/046/2015 22:46:18 - INFO - Device connected in flash mode
09/046/2015 22:46:24 - INFO - Please connect your device into flashmode.
09/046/2015 22:46:24 - INFO - Opening device for R/W
09/046/2015 22:46:24 - INFO - Reading device information
09/046/2015 22:46:24 - INFO - Phone ready for flashmode operations.
09/046/2015 22:46:25 - INFO - Opening TA partition 2
09/046/2015 22:46:25 - INFO - Current device : LT29i - YT9105UHE0 - 1266-5813_R3J - 1253-6298_9.2.A.1.215 - GLOBAL-HSPA_9.2.A.1.215
09/046/2015 22:46:25 - INFO - Closing TA partition
09/046/2015 22:46:25 - INFO - Start Flashing
09/046/2015 22:46:25 - INFO - Processing loader.sin
09/046/2015 22:46:25 - INFO - Checking header
09/046/2015 22:46:25 - INFO - Flashing data
09/046/2015 22:46:29 - INFO - Loader : S1_Root_7054 - Version : R5F001 / Boot version : R10A118 / Bootloader status : ROOTED
09/046/2015 22:46:29 - INFO - Max packet size set to 64K
09/046/2015 22:46:30 - INFO - Making a TA backup
09/046/2015 22:46:30 - INFO - Opening TA partition 1
09/046/2015 22:46:30 - INFO - Start Dumping TA partition 1
09/046/2015 22:46:36 - INFO - Finished Dumping TA partition 1
09/046/2015 22:46:36 - INFO - TA partition 1 saved to C:\Users\Administrator\.flashTool\registeredDevices\YT9105UHE0\s1ta\2015-10-09_10-46-30\1.ta
09/046/2015 22:46:36 - INFO - Closing TA partition
09/046/2015 22:46:36 - INFO - Opening TA partition 2
09/046/2015 22:46:36 - INFO - Start Dumping TA partition 2
09/046/2015 22:46:37 - INFO - Finished Dumping TA partition 2
09/046/2015 22:46:37 - INFO - TA partition 2 saved to C:\Users\Administrator\.flashTool\registeredDevices\YT9105UHE0\s1ta\2015-10-09_10-46-30\2.ta
09/046/2015 22:46:37 - INFO - Closing TA partition
09/046/2015 22:46:37 - INFO - No flash script found. Using 0.9.18 flash engine
09/046/2015 22:46:37 - INFO - Opening TA partition 2
09/046/2015 22:46:37 - INFO - Writing TA unit 00002774. Value : [01]
09/046/2015 22:46:37 - INFO - Closing TA partition
09/046/2015 22:46:37 - INFO - Opening TA partition 2
09/046/2015 22:46:37 - INFO - Closing TA partition
09/046/2015 22:46:37 - INFO - Opening TA partition 2
09/046/2015 22:46:37 - INFO - Processing amss_fsg.sin
09/046/2015 22:46:37 - INFO - Checking header
09/046/2015 22:46:37 - INFO - Flashing data
09/046/2015 22:46:37 - INFO - Processing amss_fs_1.sin
09/046/2015 22:46:37 - INFO - Checking header
09/046/2015 22:46:38 - INFO - Flashing data
09/046/2015 22:46:38 - INFO - Processing amss_fs_2.sin
09/046/2015 22:46:38 - INFO - Checking header
09/046/2015 22:46:38 - INFO - Flashing data
09/046/2015 22:46:38 - INFO - Processing cache.sin
09/046/2015 22:46:38 - INFO - Checking header
09/046/2015 22:46:38 - INFO - Flashing data
09/046/2015 22:46:40 - INFO - Processing fotakernel.sin
09/046/2015 22:46:40 - INFO - Checking header
09/046/2015 22:46:40 - INFO - Flashing data
09/046/2015 22:46:43 - INFO - Processing kernel.sin
09/046/2015 22:46:43 - INFO - Checking header
09/046/2015 22:46:43 - INFO - Flashing data
09/046/2015 22:46:45 - INFO - Closing TA partition
09/046/2015 22:46:45 - INFO - Opening TA partition 2
09/046/2015 22:46:46 - INFO - Processing system.sin
09/046/2015 22:46:46 - INFO - Checking header
09/046/2015 22:46:47 - ERROR - Processing of system.sin finished with errors.
09/046/2015 22:46:47 - INFO - Ending flash session
09/046/2015 22:46:47 - ERROR -
09/046/2015 22:46:47 - ERROR - Error flashing. Aborted
09/046/2015 22:46:47 - INFO - Flashing finished.
09/046/2015 22:46:47 - INFO - Please unplug and start your phone
09/046/2015 22:46:47 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings
09/046/2015 22:46:47 - INFO - Device connected in flash mode
09/046/2015 22:46:48 - INFO - Device disconnected
09/046/2015 22:46:50 - INFO - Device connected in flash mode