[Xperia SP Q&A, Help & Troubleshooting] Andrea1972a:
I flashed the rom to clean my Xperia SP because it had become very slow. So, I flashed the rom with the release of stock 12.0.1.A.205 I had taken from Xda-developers.

Having started to flash, at some point it turned out a mistake which I reproduce below.

I installed the drivers, and then I installed flashtool in Windows 8.1.

Now, the smartphone does not start and the LED lights green for a while and then goes out.

Who can help me solve this problem?

thank you

13/021/2015 01:21:59 - INFO - Flashtool Version 0.9.19.8 built on 24-09-2015 22:00:00

13/021/2015 01:21:59 - INFO - Executing search strategies to find proxy selector

13/022/2015 01:22:00 - INFO - No proxy found for IE. Trying next one

13/022/2015 01:22:00 - INFO - Strategy firefox failed trying next one : No Firefox installation found

13/022/2015 01:22:00 - INFO - No proxy found for java. Trying next one

13/022/2015 01:22:00 - INFO - Syncing devices from github

13/022/2015 01:22:01 - INFO - Scanning devices folder for changes.

13/022/2015 01:22:18 - INFO - Pulling changes from github.

13/022/2015 01:22:19 - INFO - Devices sync finished.

13/022/2015 01:22:25 - INFO - Device disconnected

13/027/2015 01:27:26 - INFO - Selected Bundle for Sony Xperia SP (C5303). FW release : 12.0.A.1.257. Customization : 1272-3352_R1A

13/027/2015 01:27:26 - INFO - Preparing files for flashing

13/027/2015 01:27:51 - INFO - Please connect your device into flashmode.

13/027/2015 01:27:58 - INFO - Device connected in flash mode

13/027/2015 01:27:58 - INFO - Opening device for R/W

13/027/2015 01:27:59 - INFO - Reading device information

13/027/2015 01:27:59 - INFO - Phone ready for flashmode operations.

13/027/2015 01:27:59 - INFO - Opening TA partition 2

13/027/2015 01:27:59 - INFO - Current device : C5303 - CB5124AN1N - 1272-4885_R4B - 1269-3538_12.1.A.1.205 - GLOBAL-LTE_12.1.A.1.205

13/027/2015 01:27:59 - INFO - Closing TA partition

13/027/2015 01:27:59 - INFO - Start Flashing

13/027/2015 01:27:59 - INFO - Processing loader.sin

13/027/2015 01:27:59 - INFO - Checking header

13/027/2015 01:27:59 - INFO - Flashing data

13/028/2015 01:28:00 - INFO - Loader : S1_Root_7054 - Version : R5G006 / Boot version : R11B023 / Bootloader status : ROOTABLE

13/028/2015 01:28:00 - INFO - Max packet size set to 64K

13/028/2015 01:28:00 - INFO - Making a TA backup

13/028/2015 01:28:00 - INFO - Opening TA partition 1

13/028/2015 01:28:00 - INFO - Start Dumping TA partition 1

13/028/2015 01:28:04 - INFO - Finished Dumping TA partition 1

13/028/2015 01:28:05 - INFO - TA partition 1 saved to C:\Users\Utente-PC\.flashTool\registeredDevices\CB5124AN1N\s1ta\2015-12-12_01-28-00\1.ta

13/028/2015 01:28:05 - INFO - Closing TA partition

13/028/2015 01:28:05 - INFO - Opening TA partition 2

13/028/2015 01:28:05 - INFO - Start Dumping TA partition 2

13/028/2015 01:28:06 - INFO - Finished Dumping TA partition 2

13/028/2015 01:28:06 - INFO - TA partition 2 saved to C:\Users\Utente-PC\.flashTool\registeredDevices\CB5124AN1N\s1ta\2015-12-12_01-28-00\2.ta

13/028/2015 01:28:06 - INFO - Closing TA partition

13/028/2015 01:28:06 - INFO - No flash script found. Using 0.9.18 flash engine

13/028/2015 01:28:06 - INFO - Opening TA partition 2

13/028/2015 01:28:06 - INFO - Writing TA unit 00002774. Value : [01]

13/028/2015 01:28:06 - INFO - Closing TA partition

13/028/2015 01:28:06 - INFO - Processing partition-image.sin

13/028/2015 01:28:06 - INFO - Checking header

13/028/2015 01:28:06 - INFO - Flashing data

13/028/2015 01:28:06 - INFO - Opening TA partition 2

13/028/2015 01:28:06 - INFO - Closing TA partition

13/028/2015 01:28:06 - INFO - Opening TA partition 2

13/028/2015 01:28:06 - INFO - Processing amss_fsg.sin

13/028/2015 01:28:06 - INFO - Checking header

13/028/2015 01:28:06 - INFO - Flashing data

13/028/2015 01:28:07 - INFO - Processing amss_fs_1.sin

13/028/2015 01:28:07 - INFO - Checking header

13/028/2015 01:28:07 - INFO - Flashing data

13/028/2015 01:28:07 - INFO - Processing amss_fs_2.sin

13/028/2015 01:28:07 - INFO - Checking header

13/028/2015 01:28:07 - INFO - Flashing data

13/028/2015 01:28:07 - INFO - Processing cache.sin

13/028/2015 01:28:07 - INFO - Checking header

13/028/2015 01:28:07 - INFO - Flashing data

13/028/2015 01:28:09 - INFO - Processing fotakernel.sin

13/028/2015 01:28:09 - INFO - Checking header

13/028/2015 01:28:09 - INFO - Flashing data

13/028/2015 01:28:11 - INFO - Processing kernel.sin

13/028/2015 01:28:11 - INFO - Checking header

13/028/2015 01:28:11 - INFO - Flashing data

13/028/2015 01:28:13 - INFO - Closing TA partition

13/028/2015 01:28:13 - INFO - Opening TA partition 2

13/028/2015 01:28:13 - INFO - Processing system.sin

13/028/2015 01:28:13 - INFO - Checking header

13/028/2015 01:28:15 - ERROR - Processing of system.sin finished with errors.

13/028/2015 01:28:15 - INFO - Ending flash session

13/028/2015 01:28:15 - ERROR -

13/028/2015 01:28:15 - ERROR - Error flashing. Aborted

13/028/2015 01:28:15 - INFO - Flashing finished.

13/028/2015 01:28:15 - INFO - Please unplug and start your phone

13/028/2015 01:28:15 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

13/028/2015 01:28:15 - INFO - Device connected in flash mode

13/028/2015 01:28:16 - INFO - Device disconnected

13/028/2015 01:28:18 - INFO - Device connected in flash mode

13/029/2015 01:29:01 - INFO - Device disconnected

13/029/2015 01:29:17 - INFO - Device connected in flash mode