buenas tengo un problema con un xperia lt15i he provado a meterle cualquier rom y me da este fallo
12/027/2016 19:27:59 - INFO - Current device : LT15i - CB5A1FTA5K - 1247-2532_R13D - 1241-4324_4.0.2.A.0.42 - WORLD-1-8_4.0.2.A.0.42
12/027/2016 19:27:59 - INFO - Closing TA partition
12/027/2016 19:27:59 - INFO - Start Flashing
12/027/2016 19:27:59 - INFO - Processing loader.sin
12/027/2016 19:27:59 - INFO - Checking header
12/027/2016 19:27:59 - INFO - Flashing data
12/028/2016 19:28:04 - INFO - Loader : S1_Loader_Root_773f - Version : R4A069 / Boot version : R9A021 / Bootloader status : UNROOTABLE
12/028/2016 19:28:04 - INFO - Max packet size set to 64K
12/028/2016 19:28:04 - INFO - USB buffer size set to 512K
12/028/2016 19:28:04 - INFO - No flash script found. Using 0.9.18 flash engine
12/028/2016 19:28:04 - INFO - Disabling final data verification check
12/028/2016 19:28:04 - INFO - Disabling final verification
12/028/2016 19:28:04 - INFO - Opening TA partition 2
12/028/2016 19:28:04 - INFO - Writing TA unit 00002774. Value : 01
12/028/2016 19:28:04 - INFO - Closing TA partition
12/028/2016 19:28:04 - INFO - Opening TA partition 2
12/028/2016 19:28:04 - INFO - Closing TA partition
12/028/2016 19:28:04 - INFO - Opening TA partition 2
12/028/2016 19:28:04 - INFO - Processing adsp.sin
12/028/2016 19:28:04 - INFO - Checking header
12/028/2016 19:28:04 - INFO - Flashing data
12/028/2016 19:28:06 - INFO - Processing amss.sin
12/028/2016 19:28:06 - INFO - Checking header
12/028/2016 19:28:06 - INFO - Flashing data
12/028/2016 19:28:12 - INFO - Processing amss_fs_ayame.sin
12/028/2016 19:28:12 - INFO - Checking header
12/028/2016 19:28:12 - INFO - Flashing data
12/028/2016 19:28:12 - INFO - Processing cache.sin
12/028/2016 19:28:12 - INFO - Checking header
12/028/2016 19:28:12 - INFO - Flashing data
12/028/2016 19:28:12 - INFO - Processing fota0.sin
12/028/2016 19:28:12 - INFO - Checking header
12/028/2016 19:28:12 - INFO - Flashing data
12/028/2016 19:28:13 - INFO - Processing fota1.sin
12/028/2016 19:28:13 - INFO - Checking header
12/028/2016 19:28:13 - INFO - Flashing data
12/028/2016 19:28:14 - INFO - Processing kernel.sin
12/028/2016 19:28:14 - INFO - Checking header
12/028/2016 19:28:14 - INFO - Flashing data
12/028/2016 19:28:16 - INFO - Closing TA partition
12/028/2016 19:28:16 - INFO - Opening TA partition 2
12/028/2016 19:28:16 - INFO - Processing system.sin
12/028/2016 19:28:16 - INFO - Checking header
12/028/2016 19:28:17 - ERROR - Processing of system.sin finished with errors.
12/028/2016 19:28:17 - INFO - Ending flash session
12/028/2016 19:28:17 - ERROR -
12/028/2016 19:28:17 - ERROR - Error flashing. Aborted
12/028/2016 19:28:17 - INFO - Flashing finished.
12/028/2016 19:28:17 - INFO - Please unplug and start your phone
12/028/2016 19:28:17 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings
12/028/2016 19:28:17 - INFO - Device connected in flash mode
12/028/2016 19:28:18 - INFO - Device disconnected
12/028/2016 19:28:19 - INFO - Device connected in flash mode
12/029/2016 19:29:00 - INFO - Device disconnected
12/029/2016 19:29:35 - INFO - Device connected in flash mode
12/030/2016 19:30:15 - INFO - Device disconnected
12/030/2016 19:30:39 - INFO - Device connected in flash mode
12/031/2016 19:31:19 - INFO - Device disconnected
12/031/2016 19:31:43 - INFO - Device connected in flash mode
12/032/2016 19:32:24 - INFO - Device disconnected
12/032/2016 19:32:47 - INFO - Device connected in flash mode
12/033/2016 19:33:27 - INFO - Device disconnected
12/033/2016 19:33:51 - INFO - Device connected in flash mode
12/034/2016 19:34:31 - INFO - Device disconnected
12/034/2016 19:34:55 - INFO - Device connected in flash mode
12/035/2016 19:35:37 - INFO - Device disconnected
12/036/2016 19:36:54 - INFO - Selected Bundle for SonyEricson Xperia Arc S(LT18i). FW release : 4.1.A.0.562. Customization : Iberia
12/036/2016 19:36:54 - INFO - Preparing files for flashing
12/037/2016 19:37:17 - INFO - Please connect your device into flashmode.
12/037/2016 19:37:21 - INFO - Device connected in flash mode
12/037/2016 19:37:21 - INFO - Opening device for R/W
12/037/2016 19:37:21 - INFO - Reading device information
12/037/2016 19:37:21 - INFO - Phone ready for flashmode operations.
12/037/2016 19:37:21 - INFO - Opening TA partition 2
12/037/2016 19:37:21 - INFO - Current device : LT15i - CB5A1FTA5K - 1247-2532_R13D - 1241-4324_4.0.2.A.0.42 - WORLD-1-8_4.0.2.A.0.42
12/037/2016 19:37:21 - INFO - Closing TA partition
12/037/2016 19:37:21 - INFO - Start Flashing
12/037/2016 19:37:21 - INFO - Processing loader.sin
12/037/2016 19:37:21 - INFO - Checking header
12/037/2016 19:37:21 - INFO - Flashing data
12/037/2016 19:37:27 - INFO - Loader : S1_Loader_Root_773f - Version : R4A066 / Boot version : R9A021 / Bootloader status : UNROOTABLE
12/037/2016 19:37:27 - INFO - Max packet size set to 64K
12/037/2016 19:37:27 - INFO - USB buffer size set to 512K
12/037/2016 19:37:27 - INFO - No flash script found. Using 0.9.18 flash engine
12/037/2016 19:37:27 - INFO - Disabling final data verification check
12/037/2016 19:37:27 - INFO - Disabling final verification
12/037/2016 19:37:27 - INFO - Opening TA partition 2
12/037/2016 19:37:27 - INFO - Writing TA unit 00002774. Value : 01
12/037/2016 19:37:27 - INFO - Closing TA partition
12/037/2016 19:37:27 - INFO - Opening TA partition 2
12/037/2016 19:37:27 - INFO - Closing TA partition
12/037/2016 19:37:27 - INFO - Opening TA partition 2
12/037/2016 19:37:27 - INFO - Processing adsp.sin
12/037/2016 19:37:27 - INFO - Checking header
12/037/2016 19:37:27 - INFO - Flashing data
12/037/2016 19:37:29 - INFO - Processing amss.sin
12/037/2016 19:37:29 - INFO - Checking header
12/037/2016 19:37:29 - INFO - Flashing data
12/037/2016 19:37:35 - INFO - Processing amss_fs_ayame.sin
12/037/2016 19:37:35 - INFO - Checking header
12/037/2016 19:37:35 - INFO - Flashing data
12/037/2016 19:37:35 - INFO - Processing cache.sin
12/037/2016 19:37:35 - INFO - Checking header
12/037/2016 19:37:35 - INFO - Flashing data
12/037/2016 19:37:36 - INFO - Processing fota0.sin
12/037/2016 19:37:36 - INFO - Checking header
12/037/2016 19:37:36 - INFO - Flashing data
12/037/2016 19:37:36 - INFO - Processing fota1.sin
12/037/2016 19:37:36 - INFO - Checking header
12/037/2016 19:37:37 - INFO - Flashing data
12/037/2016 19:37:37 - INFO - Processing kernel.sin
12/037/2016 19:37:37 - INFO - Checking header
12/037/2016 19:37:37 - INFO - Flashing data
12/037/2016 19:37:39 - INFO - Closing TA partition
12/037/2016 19:37:39 - INFO - Opening TA partition 2
12/037/2016 19:37:39 - INFO - Processing system.sin
12/037/2016 19:37:39 - INFO - Checking header
12/037/2016 19:37:40 - ERROR - Processing of system.sin finished with errors.
12/037/2016 19:37:40 - INFO - Ending flash session
12/037/2016 19:37:40 - ERROR -
12/037/2016 19:37:40 - ERROR - Error flashing. Aborted
12/037/2016 19:37:40 - INFO - Flashing finished.
12/037/2016 19:37:40 - INFO - Please unplug and start your phone
12/037/2016 19:37:40 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings
12/037/2016 19:37:41 - INFO - Device connected in flash mode
12/037/2016 19:37:42 - INFO - Device disconnected
12/037/2016 19:37:43 - INFO - Device connected in flash mode
12/038/2016 19:38:23 - INFO - Device disconnected
comentar que el terminal no esta roteado y la rom que tenia era la que venia de fabrica una 2.2 de android.
Que puede ser?