How To Install Android 4.0 ICS Alpha On Galaxy S / SII
DISCLAIMER: Redmond Pie is not to be held responsible for any loss of data as a result of the malfunctioning of your smartphone in the following of this guide.
Your phone must be rooted for this flashing process. Follow our guide on how to root Galaxy S II or look up how to root Galaxy S on Google. You must also flash ClockworkMod Recovery.
Secondly, please ensure that your phone has enough battery to last through the process which doesn’t take more than 5 minutes if you’ve got all the files ready. If your phone does run out of battery during the process, chances are it may get “bricked”.
Lastly, be sure to take a nandroid backup which you can use to restore your previous setup.
With that out of the way, let’s get ICS flashed on our GS/GSII!
Step 1: Download required ICS file to your computer.
Step 2: Connect your device via USB and transfer the file to the root of your phone’s storage media.
Step 3: Turn off your phone after transfer is complete. Now, turn off your device.
Step 4: Boot into ClockworkMod Recovery by holding Volume Up + Home + Power buttonsimultaneously until the main menu shows up on screen.
Step 5: Scroll down to mounts and storage and format /system. After that, you must also format /data and /cache.
Go back to menu and then wipe data / factory reset.
Step 6: From main menu: install zip from sdcard > choose zip from sdcard > [name of file you downloaded in step 1] to flash ICS to your device.
If you followed the steps correctly, you should now have Android 4.0 Ice Cream Sandwich Alpha build installed on your Samsung Galaxy S or S II smartphone.