Are you bored with the old firmware of your S3 GT-I9300? Androidbiits brings a great news for S3 GT-I9300 owners. Android 4.3 Jelly Bean UBUGNK1 I9300UBUGNK1 has been released for Samsung Galaxy S3 GT-I9300. Now question is how to install I9300UBUGNK1? Dear friend, I am here to help you in upgrading your S3 GT-I9300 to Android 4.3 UBUGNK1. Recently, I have posted the steps for updating Samsung Gear S SM-R750W to Android 2.2.1.3 R750WVLU1BNJ7. Now I am going to mention the step by step instruction to upgrade Samsung Galaxy S3 GT-I9300 to Android 4.3 UBUGNK1 I9300UBUGNK1. If you are using GT-I9300, then you can install I9300UBUGNK1. Continue reading →