[AYUDA] ERROR - ERR_SEVERITY="MAJOR";ERR_CLASS="SECURITY_CLASS";ER R_STATIC="SIN_HEAD

yo tengo este problema pero mi celular es xperia ray st18a..

18/047/2013 16:47:03 - INFO - <- This level is successfully initialized
18/047/2013 16:47:03 - INFO - Flashtool Version 0.9.11.0 built on 2013-06-04 22:50:00
18/047/2013 16:47:08 - INFO - Device disconnected
18/047/2013 16:47:52 - INFO - Device connected in flash mode
18/048/2013 16:48:33 - INFO - Device disconnected
18/049/2013 16:49:14 - INFO - Selected ST18a / 4.0.A.2.368 / Telcel Mexico
18/049/2013 16:49:14 - INFO - Preparing files for flashing
18/049/2013 16:49:20 - INFO - Please connect your device into flashmode.
18/049/2013 16:49:29 - INFO - Device connected in flash mode
18/049/2013 16:49:29 - INFO - Opening device for R/W
18/049/2013 16:49:30 - INFO - Reading device information
18/049/2013 16:49:30 - INFO - Phone ready for flashmode operations.
18/049/2013 16:49:30 - INFO - Current device : ST18i - CB511VBHE4 - 1252-5332_R1I - 1248-9545_4.1.B.0.587 - WORLD-i_4.1.B.0.587
18/049/2013 16:49:30 - INFO - Start Flashing
18/049/2013 16:49:30 - INFO - Processing loader
18/049/2013 16:49:30 - INFO - Using an unofficial loader
18/049/2013 16:49:30 - INFO - Device loader has not been identified. Using the one from the bundle
18/049/2013 16:49:30 - INFO - Checking header
18/049/2013 16:49:30 - INFO - Flashing data
18/049/2013 16:49:35 - INFO - Loader : S1_Loader_Root_773f - Version : R4A069 / Bootloader status : ROOTED
18/049/2013 16:49:35 - INFO - Processing kernel.sin
18/049/2013 16:49:35 - INFO - Checking header
18/049/2013 16:49:35 - INFO - Ending flash session
18/049/2013 16:49:35 - ERROR - ERR_SEVERITY="MAJOR";ERR_CLASS="SECURITY_CLASS";ER R_STATIC="SIN_HEAD_VER";ERR_DYNAMIC="Failed to verify sin header";

luego lo intente otra vez con una st18i nordir y me salio esto

8/050/2013 16:50:44 - INFO - Device disconnected
18/050/2013 16:50:46 - INFO - Device connected in flash mode
18/051/2013 16:51:09 - INFO - Device disconnected
18/051/2013 16:51:52 - INFO - Selected st18i / 4.1.A.0.562 / GNordic
18/051/2013 16:51:52 - INFO - Preparing files for flashing
18/052/2013 16:52:00 - INFO - Please connect your device into flashmode.
18/052/2013 16:52:04 - INFO - Device connected in flash mode
18/052/2013 16:52:04 - INFO - Opening device for R/W
18/052/2013 16:52:04 - INFO - Reading device information
18/052/2013 16:52:04 - INFO - Phone ready for flashmode operations.
18/052/2013 16:52:04 - INFO - Current device : ST18i - CB511VBHE4 - 1252-5332_R1I - 1248-9545_4.1.B.0.587 - WORLD-i_4.1.B.0.587
18/052/2013 16:52:04 - INFO - Start Flashing
18/052/2013 16:52:04 - INFO - Processing loader
18/052/2013 16:52:05 - INFO - Using an unofficial loader
18/052/2013 16:52:05 - INFO - Device loader has not been identified. Using the one from the bundle
18/052/2013 16:52:05 - INFO - Checking header
18/052/2013 16:52:05 - INFO - Flashing data
18/052/2013 16:52:10 - INFO - Loader : S1_Loader_Root_773f - Version : R4A066 / Bootloader status : ROOTED
18/052/2013 16:52:10 - WARN - This file is ignored : simlock.ta
18/052/2013 16:52:10 - INFO - Processing kernel.sin
18/052/2013 16:52:10 - INFO - Checking header
18/052/2013 16:52:10 - INFO - Ending flash session
18/052/2013 16:52:10 - ERROR - ERR_SEVERITY="MAJOR";ERR_CLASS="SECURITY_CLASS";ER R_STATIC="SIN_HEAD_VER";ERR_DYNAMIC="Failed to verify sin header";

me pueden ayudar a mi....gracias tengo el flashtool 0.9.11.0
y con estos firmware he intentado y nada....mi celular se apago asi nada mas cuando empezo a fallar y cuando lo prendo sale sony en la pantalla luego como que esta cargando y se apaga y vuelve a hacer lo mismo pero nunca prende normal.....ayudenme por favor soy nuevo aqui...