Swisscom subscriber in Switzerland received latest Ice Cream Sandwich update for Samsung Galaxy S3 I9300. The official firmware Android 4.0.4 ICS build I9300BUBLG3 comes with several performance improvement and bug fixes. You probably expecting latest Android 4.1 Jelly Bean but you have to wait for that. However, there are some Android 4.1.1 Jelly Bean firmware leak already in the wild that you can try in career unlock device. You can find leaked Android 4.1.1 official firmware for Galaxy S3 I9300 at Best Android Tips, just use the search box. Official firmware update also very good to unroot as well as
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