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How To Flash CyanogenMod 9 Android 4.0.3 ICS On Galaxy S II

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Step 1: Download CWM-flashable build of CyanogenMod 9 Experimental Build for your Galaxy S II , Google Apps and Face Unlock

Step 2: Transfer all of these files directly under the /sdcard directory on your Galaxy S II.

Step 3: Reboot into ClockworkMod Recovery. You can either do this from ROM Manager by tapping on Reboot to Recovery or you, if that doesn’t work, shut down your device. Once it is completely turned off, press and hold Volume Up + Home + Power button to boot into ClockworkMod Recovery.

Step 4: From the main menu, take a nandroid backup from backup & restore > backup. After backup is complete, do a wipe data/factory reset.

Step 5: This is the part where we flash CyanogenMod 9 along with Google Apps and Face Unlock. Navigate to install zip from sdcard > choose zip from sdcard > [.zip file]. You must flash the files in the following order:

update-cm-9.0.0-RC0-SGS2-KANG-signed.zip
gapps-6.0-IML74K.zip
faceunlock-6.0-IML74K.zip

Step 6: Select reboot system now from the main menu.

If you followed the steps correctly, your Samsung Galaxy S II will now boot into CyanogenMod 9 based on Android 4.0.3 Ice Cream Sandwich.