[Xperia SP Q&A, Help & Troubleshooting] zardes:
Hello,

Today I wanted to flash my xperia sp, when I connect it to the computer, xperia can't install the drivers, all the time showed a notification about a bad driver installation, but later the phone stopped weird acting with my laptop and and I proceeded to the next step, I do not know if I have installed all the drivers, while I start flashing everything looked normal, until the message appeared

05/030/2015 22:30:29 - ERROR - Processing of system.sin finished with errors.

05/030/2015 22:30:29 - INFO - Ending flash session

05/030/2015 22:30:29 - ERROR -

05/030/2015 22:30:29 - ERROR - Error flashing. Aborted

05/030/2015 22:30:29 - INFO - Flashing finished.

05/030/2015 22:30:29 - INFO - Please unplug and start your phone

05/030/2015 22:30:29 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

05/030/2015 22:30:30 - INFO - Device connected in flash mode

05/031/2015 22:31:24 - INFO - Device disconnected

Please help me out off this. On this time I have bricked phone :(

Please someone tell me what I must to do, step by step.

All Log of Flashtool

05/029/2015 22:29:22 - INFO - Flashtool Version 0.9.19.8 built on 24-09-2015 22:00:00

05/029/2015 22:29:22 - INFO - Executing search strategies to find proxy selector

05/029/2015 22:29:22 - INFO - No proxy found for IE. Trying next one

05/029/2015 22:29:22 - INFO - No proxy found for firefox. Trying next one

05/029/2015 22:29:22 - INFO - No proxy found for java. Trying next one

05/029/2015 22:29:22 - INFO - Syncing devices from github

05/029/2015 22:29:22 - INFO - Scanning devices folder for changes.

05/029/2015 22:29:28 - INFO - Pulling changes from github.

05/029/2015 22:29:29 - INFO - Devices sync finished.

05/029/2015 22:29:33 - INFO - Selected Bundle for Sony Xperia SP (C5303). FW release : 12.1.A.1.205. Customization : Customized CE1

05/029/2015 22:29:33 - INFO - Preparing files for flashing

05/029/2015 22:29:33 - INFO - Device disconnected

05/029/2015 22:29:39 - INFO - Please connect your device into flashmode.

05/029/2015 22:29:47 - INFO - Device connected in flash mode

05/029/2015 22:29:48 - INFO - Opening device for R/W

05/029/2015 22:29:48 - INFO - Reading device information

05/029/2015 22:29:48 - INFO - Phone ready for flashmode operations.

05/029/2015 22:29:48 - INFO - Opening TA partition 2

05/029/2015 22:29:48 - INFO - Current device : C5303 - YT910PU519 - 1272-7161_R3B - 1269-3538_12.1.A.1.205 - ORANGE-LTE_12.1.A.1.205

05/029/2015 22:29:48 - INFO - Closing TA partition

05/029/2015 22:29:48 - INFO - Start Flashing

05/029/2015 22:29:48 - INFO - Processing loader.sin

05/029/2015 22:29:48 - INFO - Checking header

05/029/2015 22:29:48 - INFO - Flashing data

05/029/2015 22:29:53 - INFO - Loader : S1_Root_7054 - Version : R5G006 / Boot version : R11B023 / Bootloader status : NOT_ROOTABLE

05/029/2015 22:29:53 - INFO - Max packet size set to 64K

05/029/2015 22:29:53 - INFO - Making a TA backup

05/029/2015 22:29:53 - INFO - Opening TA partition 1

05/029/2015 22:29:53 - INFO - Start Dumping TA partition 1

05/029/2015 22:29:58 - INFO - Finished Dumping TA partition 1

05/029/2015 22:29:58 - INFO - TA partition 1 saved to C:\Users\Bartek\.flashTool\registeredDevices\YT910PU519\s1ta\2015-12-05_10-29-53\1.ta

05/029/2015 22:29:59 - INFO - Closing TA partition

05/029/2015 22:29:59 - INFO - Opening TA partition 2

05/029/2015 22:29:59 - INFO - Start Dumping TA partition 2

05/030/2015 22:30:01 - INFO - Finished Dumping TA partition 2

05/030/2015 22:30:01 - INFO - TA partition 2 saved to C:\Users\Bartek\.flashTool\registeredDevices\YT910PU519\s1ta\2015-12-05_10-29-53\2.ta

05/030/2015 22:30:01 - INFO - Closing TA partition

05/030/2015 22:30:02 - INFO - No flash script found. Using 0.9.18 flash engine

05/030/2015 22:30:02 - INFO - Opening TA partition 2

05/030/2015 22:30:02 - INFO - Writing TA unit 00002774. Value : [01]

05/030/2015 22:30:02 - INFO - Closing TA partition

05/030/2015 22:30:03 - INFO - Processing partition.sin

05/030/2015 22:30:03 - INFO - Checking header

05/030/2015 22:30:03 - INFO - Flashing data

05/030/2015 22:30:06 - INFO - Opening TA partition 2

05/030/2015 22:30:06 - INFO - Processing boot.sin

05/030/2015 22:30:06 - INFO - Checking header

05/030/2015 22:30:06 - INFO - Flashing data

05/030/2015 22:30:09 - INFO - Closing TA partition

05/030/2015 22:30:09 - INFO - Opening TA partition 2

05/030/2015 22:30:09 - INFO - Processing amss_fsg.sin

05/030/2015 22:30:09 - INFO - Checking header

05/030/2015 22:30:09 - INFO - Flashing data

05/030/2015 22:30:12 - INFO - Processing amss_fs_1.sin

05/030/2015 22:30:12 - INFO - Checking header

05/030/2015 22:30:12 - INFO - Flashing data

05/030/2015 22:30:13 - INFO - Processing amss_fs_2.sin

05/030/2015 22:30:13 - INFO - Checking header

05/030/2015 22:30:13 - INFO - Flashing data

05/030/2015 22:30:15 - INFO - Processing cache.sin

05/030/2015 22:30:15 - INFO - Checking header

05/030/2015 22:30:15 - INFO - Flashing data

05/030/2015 22:30:20 - INFO - Processing fotakernel.sin

05/030/2015 22:30:20 - INFO - Checking header

05/030/2015 22:30:20 - INFO - Flashing data

05/030/2015 22:30:23 - INFO - Processing kernel.sin

05/030/2015 22:30:23 - INFO - Checking header

05/030/2015 22:30:23 - INFO - Flashing data

05/030/2015 22:30:27 - INFO - Closing TA partition

05/030/2015 22:30:28 - INFO - Opening TA partition 2

05/030/2015 22:30:28 - INFO - Processing system.sin

05/030/2015 22:30:28 - INFO - Checking header

05/030/2015 22:30:29 - ERROR - Processing of system.sin finished with errors.

05/030/2015 22:30:29 - INFO - Ending flash session

05/030/2015 22:30:29 - ERROR -

05/030/2015 22:30:29 - ERROR - Error flashing. Aborted

05/030/2015 22:30:29 - INFO - Flashing finished.

05/030/2015 22:30:29 - INFO - Please unplug and start your phone

05/030/2015 22:30:29 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

05/030/2015 22:30:30 - INFO - Device connected in flash mode

05/031/2015 22:31:24 - INFO - Device disconnected

Im reinstall and install all drivers for flashtool, and I use 0.19.8.6 version of flashtool and it worked again.

Problem sloved