Tips & Tutorials

Root XXUGNJ2 Android 4.3 on Galaxy S3 I9300 Official Firmware

Want a complete guide on rooting Samsung Galaxy S3 I9300? You have clicked on the right article! We will be showing you how to root your Galaxy S3 I9300 on the latest XXUGNJ2 Android 4.3 firmware. Older firmwares won’t be entertained as the result of these steps on them are unknown. Best way to resurrect an old Android phone especially a flagship like this, is to root it. With root, custom firmwares can be installed which means you can run later Android versions than the Jelly Bean you are currently running. Don’t want to revamp the system? Install themes on the existing system or access the ton of root apps available. CF-Auto-Root and ODIN are the most easiest root tools availble which is also why we will be using them in our tutorial. If root still sounds confusing do read: Benefits of rooting an Android device. You can now root Galaxy S3 I9300 with XXUGNJ2 Android 4.3 firmware using ODIN with our tutorial given below.

As you continue reading below, we will guide you through the entire process of how to root XXUGNJ2 Android 4.3 Jelly Bean on Galaxy S3 I9300 with complete steps. Apart from this, we have some data backup tips for your phone and other important tips below. Read our list of the essential root apps available! The following tips are important as they will help the rooting procedure to go smooth without any issues. Let’s get on with the tutorial now.

Root XXUGNJ2

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 😉

Root XXUGNJ2 Android 4.3 – CF-Root Method Details:

For those who do not know about CF-Auto-Root:

CF-Root is the root for “rooting beginners” and those who want to keep as close to stock as possible. CF-Root is meant to be used in combination with stock Samsung firmwares, and be the quickest and easiest way for your first root. A modified recovery and cache partition will be flashed, which will install (only) SuperSU, then clean-up the cache partition and re-flash the stock recovery.

NOTE: Using this root increases your flash counter. You should run Triangle Away after rooting to reset the counter. Note that if you want to run custom kernels or custom recoveries, your flash counter will be set to 1 at every boot. Either configure Triangle Away to reset the counter at every boot (Play version only) or only reset the counter when you need to go into warranty.

NOTE: Your Samsung Galaxy S III I9300 should be on the Android 4.3 build XXUGNJ2 firmware in order to apply this root method. Please make sure your phone is on the said firmware from Settings > About phone.

There are tons of useful articles and how-to guides on Team Android for this phone, but we think you might be interested in the following posts:

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 root Galaxy S3 I9300 on XXUGNJ2 Android 4.3 official firmware update.

About the author

Taimur Akmal

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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