[Q] unlocking boot loader sony xperia M

i have tried the followings

http://xdaforums.com/showthread.php?t=2484622

sony mobile has issued me a code. i have tried the steps by using flashtool. but now getting the msg

16/021/2014 13:21:20 - INFO - Flashtool Version 0.9.16.1 built on 06-16-2014 23:00:00
16/021/2014 13:21:20 - INFO - Executing search strategies to find proxy selector
16/021/2014 13:21:21 - INFO - No proxy found for IE. Trying next one
16/021/2014 13:21:21 - INFO - No proxy found for firefox. Trying next one
16/021/2014 13:21:21 - INFO - No proxy found for java. Trying next one
16/021/2014 13:21:21 - INFO - Syncing devices from github
16/021/2014 13:21:21 - INFO - Pulling changes
16/021/2014 13:21:24 - INFO - Devices sync finished.
16/021/2014 13:21:29 - INFO - Device connected in fastboot mode
16/021/2014 13:21:43 - INFO - Please connect your device into flashmode.
16/021/2014 13:21:58 - INFO - Device disconnected
16/022/2014 13:22:04 - INFO - Device connected in fastboot mode
16/022/2014 13:22:29 - INFO - Device disconnected
16/022/2014 13:22:37 - INFO - Opening device for R/W
16/022/2014 13:22:38 - ERROR - Drivers need to be installed for connected device.
16/022/2014 13:22:38 - ERROR - You can find them in the drivers folder of Flashtool.
16/023/2014 13:23:05 - INFO - Processing loader.sin
16/023/2014 13:23:05 - INFO - Checking header
16/023/2014 13:23:05 - ERROR - Processing of loader.sin finished with errors.
16/023/2014 13:23:05 - ERROR -
16/023/2014 13:23:05 - INFO - Your phone bootloader cannot be officially unlocked
16/023/2014 13:23:05 - INFO - You can now unplug and restart your phone
16/023/2014 13:23:38 - INFO - Please connect your device into flashmode.
16/023/2014 13:23:39 - INFO - Opening device for R/W
16/023/2014 13:23:39 - INFO - Reading device information
16/023/2014 13:23:39 - INFO - Unable to read from phone after having opened it.
16/023/2014 13:23:39 - INFO - trying to continue anyway
16/023/2014 13:23:51 - INFO - Processing loader.sin
16/023/2014 13:23:51 - INFO - Checking header
16/023/2014 13:23:51 - ERROR - Processing of loader.sin finished with errors.
16/023/2014 13:23:51 - ERROR - Error in processHeader : 1 : Incorrect function.
16/023/2014 13:23:51 - INFO - Your phone bootloader cannot be officially unlocked
16/023/2014 13:23:51 - INFO - You can now unplug and restart your phone

then tried this one by using Eclipse ADT Bundle
http://xdaforums.com/showthread.php?t=2484428

result:
...
FAILED (command write failed (Unknown error))
finished. total time: 5.005s


now what should i do for unlocking my boot loader????

it says boot loader unlock: no

now can i unlock bootloader ??