[Sony Xperia S, Acro S, Ion] adrian721:
this is log unlock bootloader

27/025/2013 08:25:20 - INFO - <- This level is successfully initialized
27/025/2013 08:25:20 - INFO - Flashtool Version 0.9.11.0 built on 2013-06-04 22:50:00
27/025/2013 08:25:25 - INFO - Device disconnected
27/026/2013 08:26:19 - INFO - Please connect your device into flashmode.
27/026/2013 08:26:27 - INFO - Device connected in flash mode
27/026/2013 08:26:27 - INFO - Opening device for R/W
27/026/2013 08:26:27 - INFO - Device connected in flash mode
27/026/2013 08:26:27 - INFO - Reading device information
27/026/2013 08:26:27 - INFO - Phone ready for flashmode operations.
27/026/2013 08:26:27 - INFO - Current device : LT26ii - BX903828A3 - 1266-9967_R2H - 1265-3465_6.2.B.1.96 - WORLD_6.2.B.1.96
27/026/2013 08:26:27 - INFO - Processing loader
27/026/2013 08:26:38 - INFO - Checking header
27/026/2013 08:26:38 - INFO - Flashing data
27/026/2013 08:26:40 - INFO - Loader : S1_Root_de72 - Version : R5C004 / Bootloader status : ROOTABLE
27/026/2013 08:26:40 - INFO - Start Reading unit 000008B2
27/026/2013 08:26:40 - INFO - Reading TA finished.
27/026/2013 08:26:40 - INFO - Ending flash session
27/026/2013 08:26:40 - INFO - Now unplug your device and restart it into fastbootmode
27/026/2013 08:26:41 - INFO - Device connected in flash mode
27/026/2013 08:26:42 - INFO - Device disconnected
27/027/2013 08:27:18 - INFO - Device connected in fastboot mode
27/032/2013 08:32:41 - INFO - Unlocking phone using key 10AC977FBA16B9AF
27/032/2013 08:32:42 - INFO - ...
27/032/2013 08:32:42 - INFO - (bootloader) Unlock phone requested
27/032/2013 08:32:42 - INFO - OKAY [ 0.107s]
27/032/2013 08:32:42 - INFO - finished. total time: 0.108s
27/032/2013 08:32:42 - INFO - Device will reboot into system now
27/032/2013 08:32:42 - INFO - Unlock code saved to C:\flashtool-0.9.11.0-windows_2\custom\mydevices\BX903828A3\ulcode.txt
27/032/2013 08:32:42 - INFO - Device disconnected
27/033/2013 08:33:09 - INFO - Log written to C:\flashtool-0.9.11.0-windows_2\flashtool_2013-09-26_08-25-20.log

n i'll try to flash kernel in fastboot mode n i get this

27/035/2013 08:35:28 - INFO - <- This level is successfully initialized
27/035/2013 08:35:28 - INFO - Flashtool Version 0.9.11.0 built on 2013-06-04 22:50:00
27/035/2013 08:35:32 - INFO - Device disconnected
27/035/2013 08:35:53 - INFO - Device connected in fastboot mode
27/035/2013 08:35:54 - INFO - Selected kernel (boot.img or kernel.sin): C:\Users\lianet 5\Desktop\kernel.sin
27/035/2013 08:35:54 - INFO - Flashing selected kernel
27/035/2013 08:35:54 - INFO - sending 'boot' (6903 KB)...
27/035/2013 08:35:54 - INFO - FAILED (remote: The Device must be rooted first)
27/035/2013 08:35:54 - INFO - finished. total time: 0.008s
27/035/2013 08:35:54 - INFO - FASTBOOT Output:
sending 'boot' (6903 KB)...
FAILED (remote: The Device must be rooted first)
finished. total time: 0.008s

27/035/2013 08:35:54 - INFO - Please check the log before rebooting into system
27/036/2013 08:36:00 - INFO - Selected kernel (boot.img or kernel.sin): C:\Users\lianet 5\Desktop\kernel.sin
27/036/2013 08:36:00 - INFO - Flashing selected kernel
27/036/2013 08:36:00 - INFO - sending 'boot' (6903 KB)...
27/036/2013 08:36:00 - INFO - FAILED (remote: The Device must be rooted first)
27/036/2013 08:36:00 - INFO - finished. total time: 0.009s
27/036/2013 08:36:01 - INFO - FASTBOOT Output:
sending 'boot' (6903 KB)...
FAILED (remote: The Device must be rooted first)
finished. total time: 0.009s

27/036/2013 08:36:01 - INFO - Please check the log before rebooting into system
27/036/2013 08:36:15 - INFO - Log written to C:\flashtool-0.9.11.0-windows_2\flashtool_2013-09-26_08-35-27.log
27/036/2013 08:36:17 - INFO - Device disconnected

please .......