How To Root Samsung Galaxy S3 LTE Running Android 4.3 Jelly Bean (XXUGML3)
Samsung released the I9300XXUGML3 firmware this week for the Galaxy S3 to patch a number of bugs from previous builds. If you've already updated, chances are you're in need of a root guide.
This how-to guide will show you how to root your Galaxy S3 (GT-I9300 model) running the latest official Android 4.3 Jelly Bean build designated XXUGML3. Rooting your Galaxy S3 will have a number of benefits, such as allowing for the installation of third-party root apps, performance tweaks and custom ROMs. However, rooting will activate Samsung's KNOX system and void the warranty.
As always, DroidReport assumes no liability for this root guide. Proceed with caution.
Before Getting Started
Before you get started, ensure that your Galaxy S3 is the GT-I9300 model. Attempting to root any other device with this guide will most likely result in a bricked phone.
As always, you want to backup your device and charge it to at least 80 percent. Finally, enable USB Debugging mode by navigating to Settings -> Developer Options.
How To Root Samsung's Galaxy S3 (Android 4.3 XXUGML3)
1) Download CF-Auto-Root for the Galaxy S3, as well as Odin3 v3.07, which can be found here and here.
2) Put your Galaxy S3 in download mode by holding the Volume Down, Home and Power buttons. When a warning prompt appears, press Power again.
3) Unzip the CF-Auto-Root archive to retrieve the .tar.md5 file. Unzip Odin. Right click on Odin and run the application as an administrator.
4) Using your USB cable, connect your Galaxy S3 to your computer. You should see a yellow box with the message "Added!" If this does not occur, reinstall your computer's USB drivers.
5) Within Odin, press the PDA button and select the tar.md5 file extracted from the CF-Auto-Root archive.
6) Select Auto Reboot and F.Reset Time while leaving all other boxes unchecked.
7) Click start and wait until the installation process completes. Any interruption may result in a bricked device.
8) After a PASS message appears, your phone will reboot automatically and you'll officially be rooted. Kudos.
