[GUIDE] How to root Gingerbread - Galaxy S II Q&A, Help & Troubleshooting

When I got my i9100, I didn't have any guides or tutorials to learn about root access. It was a trial and error process that I went through to further understand the process of flashing ROM's and gaining root. I have a little Linux experience so the term root wasn't new to me, but it is to the many users that flock here. In this guide I'll show you how to root Gingerbread using CF-Root.
Before I decided to write this guide, I was using CyanogenMod 9 but wanted to help the users of XDA, with the amount of threads I've seen asking for help rooting.
GINGERBREAD ROOT:
I'm using the stock ROM's for my country, Trinidad, rooting with CF-Root. That's to show people having all sorts of trouble finding a CF-Root kernel that even though where I live there's a kernel to use. It's not difficult.
Files used:
GT-I9100_TTT_I9100UHKI2_I9100UHKI1_I9100UUBKI2.tar
CF-Root-SGS2_XW_INU_KL1-v5.0-CWM5.tar
Odin3 v1.85.exe
Go to: CF-Root 5.5
- On your phone, dial *#1234#
- You'll see PDA, PHONE, CSC, pay attention to PDA and the last characters. In my case it's KL1.
- Using CF-Root's thread, look for a kernel matching those three digits (CTRL+F the search function).
- Download the matching kernel, flash using Odin.
HOW TO FLASH KERNEL USING ODIN:
1. Put the device into Download Mode, the device will accept anything that can be flashed using Odin.
To do this, hold down the following key combination:
Volume Down + Home + Power
Samsung KIES, does not need to be installed for Odin to recognise your device. However, the Samsung USB Drivers needs to be installed.
Once you've put the device into Download Mode, where it's ready to accept whatever you can throw at it, Odin needs to see it. When you plug the device into the computer, it will show up in the Message box saying 'Added!'.
For example:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Click PDA, select the CF-Root kernel you've deemed appropriate. Make sure to unzip the file or else Odin wouldn't be able to see it. It'll see the tar file though. It will not see the zImage inside the tar file.
This image is showing you where to put the CF-Root kernel to be flashed.
Start the process, it'll take less than ten seconds.
You've successfully rooted your device and replaced the stock recovery with ClockworkMod Recovery.

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thanks for the info but i think you should move it to the general forum