Table of Contents
How to get root on Samsung Galaxy S II I9100
Warning: It was working for me. I'm not responsible if you break your device. You are doing this steps at your own risk. The installation of a modified firmware invalidates the manufacturer's warranty! You have been warned!
Why root? I want to use some advanced features like DroidWall(frontend for iptables), Titanium Backup, OpenVPN, so I need root.
What we need?
I used a linux PC and virtual Windows in VirtualBox VM. Please check that you are running Android 2.3.3.
- Download insecure kernel
- Download Odin
- Download Su update package
Flashing the insecure kernel
- Switch off your phone
- Press and hold Volume Down+Ok and press the power button. You should see the download picture
- Start Odin in the VM, select the in the PDA section the XWKDD_insecure.tar
- Connect your mobile via USB tunneling and choose start after you see the com port in the odin frontend.
- Wait for reboot…
Getting root
- Install “Superuser” from Android Market
- Unpack “system/bin/su” from su-2.3.2-efgh-bin-signed.zip
- Push su to the mobile via adb:
/opt/android-sdk-update-manager/platform-tools/adb push su /sdcard/su
- Start adb shell and remount the /system read write
/opt/android-sdk-update-manager/platform-tools/adb shell mount -o remount,rw /dev/block/mmcblk0p9 /system
- Copy su
cat /sdcard/su > /system/bin/su chmod 06755 /system/bin/su
- Remount /system read only and remove su from sdcard
mount -o remount,ro /dev/block/mmcblk0p9 /system rm /sdcard/su exit
That's all;-)
Discussion