DUUGNC1 Android 4.3 Jelly Bean firmware now available for the Galaxy S3 I9300T. After the international variant of Galaxy S3 got the Android 4.3 Jelly Bean update, Samsung was bound to release it for Samsung Galaxy S3 I9300T too. DUUGNC1 firmware brings Android 4.3 to your phone. Also with the Android version update, you get some system enhancements as well. For example, the camera app is now slightly improved with new features. You can easily update Galaxy S3 I9300T to DUUGNC1 Android 4.3 official Jelly Bean firmware using our tutorial below manually. I9300TDUUGNC1 firmware is an unbranded firmware and can be installed on any unlocked Galaxy S3 I9300T. You can also root Galaxy S3 I9300T on this firmware!

As you continue reading below, we will guide you how to backup your important data on the phone, some other important tips and then tell you how to install DUUGNC1 Android 4.3 Jelly Bean on Galaxy S3 I9300T using ODIN. Don’t forget to backup all your apps and personal data because we don’t want anyone losing their data during the installation process. Remember, this is a branded firmware which includes custom carrier boot animations and it also might contain some extra system apps. Furthermore, be sure to only use this guide if you have the I9300T model otherwise we can not guarantee success. Let’s continue with the tutorial now.

Samsung Galaxy S3 I9300T - DUUGNC1 Android 4.3

Disclaimer: All the custom ROMs and firmwares, official software updates, tools, mods or anything mentioned in the tutorial belong to their respective owners/developers. We (TeamAndroid.com) or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

Android 4.3 DUUGNC1 Firmware Details:

Model: GT-I9300T
Model name: GALAXY S III
Country: Australia (Telstra)
Version: Android 4.3
Changelist: 2170997
Build date: Thu, 06 Mar 2014 08:37:55 +0000
Product Code: TEL

If you plan on rooting this phone or are still confused for why to root Galaxy S3 I9300T, read: Benefits of Rooting Your Android Device.

Samsung Galaxy S3 USB Drivers

You will need to connect your Android phone with the computer. For that, please make sure you have installed the USB drivers for Samsung Galaxy S3 properly. If not, you can download the latest official drivers from our Android USB Drivers section here:

Download Samsung Galaxy S3 USB drivers!

Backup and Other Important Tips

Done with the USB drivers? Perfect. The tutorial is on the next page, but first, please take a look at the following tips and important points you need to take care of. These are important, as we don’t want anyone losing their personal data or apps:

Always backup your important data that you might need after you install a new custom ROM, an official software update or anything else. Make a backup for just in case, you never know when anything might go wrong. See below for some tips on how to backup data:

Samsung users can also back up data using Samsung KIES. If you backup data manually, you get more options what to choose from and it is very easy to move data across Android devices from different manufacturers, i.e moving Samsung Galaxy Note backup data to HTC One X.

If you already have a custom recovery (ClockworkMod, TWRP etc.) installed on your phone, we strongly recommend a backup using that as it creates a complete image of your existing phone set up.

A few more optional tips that you should remember:

1. Having problems connecting your Android phone to the computer? You need to enable USB debugging mode. See here: How to Enable USB Debugging — for Gingerbread, Ice Cream Sandwich and Jelly Bean.

2. Make sure your Android device is charged up to 80-85% battery level. This might help you: How to Check Battery Percentage. Why? Because, if your phone goes off suddenly while installing a custom ROM, flashing an official firmware update or installing mods etc. — your phone might get bricked or go dead permanently. No one wants that, right?

4. Most of the tutorials and how-to guides on Team Android are for factory unlocked Android phones and tablets. We recommend NOT to try our guides if your phone is locked to a carrier, unless we have specified the carrier name or device model.

If you find the above tips useful and they were helpful to you, please consider giving us a +1 or LIKE to thank us!

All set and ready? Good. You can now head over to the next page and update Galaxy S3 I9300T to Android 4.3 DUUGNC1 official firmware update.

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Devoted writer, enjoys developing code. Appreciates excellent food, exceptional coffee and great company. He is also into sublime design and nicely built cars.

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