Update Samsung Galaxy S3 i9300 to official Android 4.0.4 XXALF2

Android.gs: Samsung has already released an update for the unlocked UK version of the Galaxy S3 i9300. But don’t worry, because we got our hands on it and here’s a guide to flash it, no matter what’s your location or carrier. This update comes with stability improvements, and as you may know, it’s always better to use a new firmware, because it’s faster, more stable and usually comes with more features.