Root Galaxy S3 I9300 on Official Android 4.1.2 XXELL1 Jelly Bean Firmware ... IBTimes.co.uk An earlier IBTimes UK report discussed a detailed step-by-step guide to manually install the official Android 4.1.2 XXELL1 Jelly Bean firmware on your Galaxy S3 I9300 using ODIN. Galaxy S3 users who have already updated their device to the latest ... |