[Completed] How do i root Galaksy S2 I9100?

aviramof said:

I Have galaxy s2 i9100 with rom 4.1.2 with kernel 3.0.31-1211311 and I do not know what CF-ROOT to install can someone tell me excaclly what to flash with odin?

Thanks in advance.

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Chainfire has not updated his CF-Root kernel for latest JB ROM versions.
Have a look at PhilZ-kernel instead.
This is a rooted stock kernel (so quite similar to CF-Root kernel), but with a nice touch CWM recovery.
You can flash the kernel tar file in PDA section of Odin, but Phil3759 provides his kernel also as signed zip file, which can easily be flashed in stock recovery from your external sd card (without triggering the custom flash counter).
I recommend to flash the kernel zip file, as this will auto-root your phone.

Just read the kernel thread ... at least the first three posts.
If you are not sure what kernel version you have to flash, just ask in this kernel thread ... you only have to post your current ROM build version number (Settings > About phone > Build version).

EDIT:
You can always post in the S2 help/q&a thread.
(To post in dev thread, you need at least 10 posts on xda.)
And you will get help in this general help thread soon too.

See you in PhilZ-kernel or the general help thread ... and happy flashing/rooting !

My tapatalk signature:

aviramof said:

Build Version:
JZO54K.I9100JHLS7

BASE VERSION:
I9100JHLS2

KERNEL:
3.0.31-1211311 root@buildserver-228 #3
SMP PREEMPT Thu jul 4 16:21:29 EEST 2013

Android 4.1.2

GT-I9100.

I tried flashing philz_touch_6.41.6-i9100.tar.md5 and got a fail in odin.

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Please don't flash the recovery only to the SGS2 ... it won't work.
On this device you need to flash the kernel including a recovery.
So download this kernel zip file ... if XWMS3 is your current ROM version.
Flash it from external sd card in recovery and this will auto-root your phone.
(Flashing the tar/md5 file with Odin won't automatically root your phone.)

For further questions, please post in the S2 general help thread.