problem rooting with flashtools :/

[chelaka]

hi i tried rooting by xperia u st25i, ics 4.0.4, build-6.1.1.b.1.54 using flash tools but i keep getting this error-  please help

21/052/2013 12:52:25 - INFO - <- This level is successfully initialized     

21/052/2013 12:52:25 - INFO - Flashtool Version 0.9.10.1 built on 2013-01-09 19:49:47     

21/052/2013 12:52:25 - INFO - You can drag and drop ftf files here to start flashing them     

21/052/2013 12:52:37 - INFO - Device connected with USB debugging on     

21/052/2013 12:52:38 - INFO - Connected device : ST25     

21/052/2013 12:52:38 - INFO - Installed version of busybox : N/A     

21/052/2013 12:52:38 - INFO - Android version : 4.0.4 / kernel version : 3.0.8+ / Build number : 6.1.1.B.1.54     

21/052/2013 12:52:41 - INFO - Pushing C:\Flashtool\.\devices\ST25\busybox\1.20.2\busybox to /data/local/tmp/busybox     

21/052/2013 12:52:43 - INFO - Pushing C:\Flashtool\custom\root\subin\Superuser\su to /data/local/tmp/su     

21/052/2013 12:52:43 - INFO - Pushing C:\Flashtool\custom\root\subin\Superuser\Superuser.apk to /data/local/tmp/Superuser.apk     

21/052/2013 12:52:46 - INFO - Pushing C:\Flashtool\custom\root\AdbRestore\RootMe.tar to /data/local/tmp/RootMe.tar     

21/052/2013 12:52:47 - INFO - Now open your device and restore "RootMe" backup. Waiting ...     

21/052/2013 12:52:47 - INFO - You have 60 seconds to follow the restore advice     

21/052/2013 12:52:47 - INFO - Running adbrestoreexploit     

21/052/2013 12:52:49 - INFO - Restore worked fine. Rebooting device. Please wait ...     

21/053/2013 12:53:08 - INFO - Waiting for device     

21/053/2013 12:53:11 - INFO - Device disconnected     

21/053/2013 12:53:33 - INFO - Device connected with USB debugging on     

21/053/2013 12:53:39 - INFO - Root hack did not work.     

21/053/2013 12:53:39 - INFO - Cleaning hack files     

21/053/2013 12:53:39 - INFO - Rebooting device. Please wait.     

21/053/2013 12:53:46 - INFO - Device disconnected     

21/054/2013 12:54:08 - INFO - Device connected with USB debugging on     

21/054/2013 12:54:10 - INFO - Connected device : ST25     

21/054/2013 12:54:10 - INFO - Installed version of busybox : N/A     

21/054/2013 12:54:10 - INFO - Android version : 4.0.4 / kernel version : 3.0.8+ / Build number : 6.1.1.B.1.54 

[Nabeel]

Well well well, PLEASE do a search before posting

Here you go btw

{GUIDE} How to Root Xperia™ Smartphones

[jatinrungta]

first flash b.10 kernel

then root

then flash b.54 kernel

[chelaka]

can you tell me how to do this because when i go to fastboot mode to flash the kernal it says i have to be rooted but to root i need to have this kernal ???

[Nabeel · Accepted solution]

You see what i wrote above ?

You don't have to be in a fastboot to flash a stock kernel.

See reply number 1, how to root xperia u go sola

[chelaka]

thanks this worked earlier i had downloaded .elf kernals which i had no idea about anyway thanks