Yes I Can!

How To Install Android 4.0.3 ICS MIUI ROM On Galaxy S II

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Step 1: Download the AdyScorpiusMIUIv2.1-ICS-i9100-2.1.20.zip .

Step 2: Once the download is complete, copy the .zip file to /sdcard.

Step 3: Boot your Galaxy SII into Recovery Mode.

Step 4: Select Wipe Data/Factory Reset, and then go to Mounts and Storage and select Wipe System.

Step 5: Install zip from sdcard – Version 2.1.

Step 6: Wipe Data/Factory Reset once more.

Step 7: Reboot your device, and you should be good to go.