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Samsung Galaxy S3 GT-I9300- Simple Tutorial Root I9300UBUGML2 Android 4.3 Firmware,A simple method to root I9300UBUGML2 Android 4.3 Jelly Bean Firmware is now available at NasirTech. Samsung Galaxy S3 GT-I9300 recently get updated to the I9300UBUGML2 4.3 Jelly Bean Firmware. If you yet to update the firmware, then update the same by following the above link. Hope you updated this latest firmware on your device and now you can root the UBUGML2 firmware using our simple tutorial below. The below guide will help you to root I9300UBUGML2 4.3 Jelly Bean Firmware running on Galaxy S3 GT-I9300. Continue reading the tutorial for complete guide.
After updating official firmware, your device no longer belongs to rooted device. So, after official firmware update, many of us prefer to root our device to enjoy some additional features that unrooted android device doesn’t offer. With a rooted android device, you can install apps that ask root permission, flash various custom ROMs, install MODs and tweak various features. Root removes default bloatware apps that free-up lots of memory space and extend the battery life. However, once rooted, manufacturer warranty will be void. But you can regain the warranty by following proper unroot process. To know more about benefits of rooting android device, read- Complete Note on What is Rooting and Benefits of Rooting Android Phone.
So, want to root Galaxy S3 GT-I9300 Running I9300UBUGML2 4.3 Jelly Bean Firmware? Continue reading this page to get all the necessary steps to successfully root your device. The root file (CF-Auto-Root) we used in this tutorial is safe and have nearly 100% success rate. We’ll use Odin software to flash the root file.
The tutorial is made with simple step by step guide, so that even an android newbie user can follow and successfully root his/her device. However, in this process you may loss your personal data and settings. So, we recommend you to follow all the backup instructions before proceed to rooting guide.

Steps to Root Galaxy S3 GT-I9300 Running I9300UBUGML2 4.3 Jelly Bean through Odin:

1. Download CF-Auto-Root for Galaxy S3 I9300 and extract the Zip file: CF-Auto-Root-m0-m0xx-gti9300.zip
2. Download Odin 3.09 and extract the Zip file: Odin3_V3.09.Zip
3. Now, Switch off your phone and boot Galaxy S3 I9300 into Download Mode by pressing and holding the Volume Down+Home+Power buttons together (long press until the boot screen appear), now press Volume Up key to proceed to Download Mode.
4. Run the Odin3 v3.09.exe file as an administrator (Right click on the .exe file and click on Run as administrator)
5. Now connect your Galaxy S3 I9300 to your computer via USB cable
6. In Odin3 screen, you should see a COM Port number like “0:[COM7]” at ID:COM section and “Added!” text at the message box. This means your device has been detected by Odin3.
7. Make sure that, only the “Auto Reboot” and “F. Reset Time” options are checked.
8. Now, click on the AP button and select the CF-Auto-Root-m0-m0xx-gti9300.tar.md5 file.
9. Finally, click on the Start button to begin the rooting process, wait few moments.
10. Once completed, you would see “PASS!” message in ID:COM port having green background
11. Your phone should automatically reboot after completion
12. You can now disconnect your phone from computer
13. Finish

I have found a way to make "SafeRoot" root the galaxy S3 GT-I9300 on the latest android 4.3 jelly bean like any other devices.

Requirements :

• I9300_Root_Kernel file
• I9300_MK6_Kernel file
• Odin3
• Installed Samsung Kies or Samsung mobile USB driver
• Saferoot file

Instructions :

1. All the process WONT wipe your data, but back it up just incase this process corrupt your data.
2. Flash Root_Kernel.tar.md5 file by odin3 in PDA or AP section.
3. Make sure Re-Partition is NOT selected.
   
4. Root your device using SafeRoot method by following this guide : [No Warranty Void] Safe Root Android 4.3 for Galaxy S3/S4 Note 2
5. Flash back the current kernel of your firmware MK6 until Samsung update it by Odin3

Notes:

• Download and install manually busybox if the tool is failed to install it.
• Use this guide at your own risk
• This process and kernel files ONLY for the international version GT-I9300 and ONLY for Android 4.3 jelly bean.
• Normally this process will continue to work until Samsung starts to push Android 4.4 kitkat to the S3 (DONT use it on 4.4 kitkat, it will brick your device).
• You will not be able to receive OTA update, but you can update your device at any time by Kies or Odin3. 
• This process is tested by me and worked on all the latest Android 4.3 jelly bean firmwares.
• To unroot your device --> Open SuperSU app / Settings / Full UnRoot.

Downloads :

• Odin3 v3.04 HERE, v3.07 HERE, v3.09 HERE
• Latest Samsung Mobile Driver HERE
• Latest Samsung Kies HERE
• Latest Samsung Kies 3 HERE
• I9300_Root_Kernel HERE
• I9300_MK6_Kernel  HERE 
• I9300_NB1_Kernel HERE thanks to "afham"
• SafeRoot files HERE 

Samsung Galaxy S3 GT-I9300- How to Install I9300UBUGML2 Android 4.3 Jelly Bean Firmware,I9300UBUGML2 Android 4.3 Jelly Bean Firmware Last Updated on 25-Feb-2014. You can now update the latest UBUGML2 4.3 Jelly Bean official firmware on Samsung Galaxy S3 GT-I9300 Smartphone. Samsung recently started rolling out an OTA update about the firmware. The latest firmware build version is I9300UBUGML2. However, the firmware is currently out for Mexico. Hope the firmware will hit other part of the world soon. The Galaxy S3 I9300 recently started receiving  Android 4.3 Jelly Bean firmware after a long wait. Samsung already released many regular firmware update till now and here we have the latest available firmware for the device. If you own the device and not yet updated this latest firmware, then update the same using our simple tutorial below. The below step by step guide will help you to download and flash the latest I9300UBUGML2 Android 4.3 Jelly Bean Firmware manually through Odin.

Root I9300UBUGML2

The latest Android 4.3 Jelly Bean official firmware is definitely a great update for the Galaxy S3 users as the device has been on Android 4.1.2 Jelly Bean from a long time. The latest firmware will upgrade the android version as well as will activate many new features, changes and improvements. Check out some of the new features and changes that coming with this latest update from below.

New features and changes in Android 4.3 Jelly Bean:

Galaxy S4 like lockscreen, Multi-pages feature on lockscreen, support widget on lockscreen, Tabbed UI in Settings, Daydream feature, Voice control feature for apps like phone, camera, music player and so on, Hands-free Mode, New Notification Panel with 2 pages, ANT+ support, TRIM support, Camera Improvements, Move apps to SD feature, New Samsung keyboard, Changed icons for some Samsung apps, Smoother TouchWiz, Adapt display, Adapt sound, New S-Voice from Galaxy S4, Full screen mode in Samsung apps and many more.

So, want to update your Galaxy S3 I9300 to the latest UBUGML2 Android 4.3 Jelly Bean firmware? For official way, either you can go for  OTA (over the air) from Settings-About Phone-Software Update or download firmware through the Samsung Kies utility. However, most of us prefer manual way to update official firmware. So, in this article you’ll find step by step manual guide to update the latest Android 4.3 UBUGML2 firmware on your Galaxy S3 I9300 through Odin.

Important Note:

“The firmware is released only for the Samsung Galaxy S3 GT-I9300 model, so don’t try this in any other android device. Check your device model number from Settings-About Phone. Also the tutorial is based on Windows PC. Follow all the pre-requisites, procedures and steps carefully to avoid breaking your phone”.

Android 4.3 Jelly Bean I9300UBUGML2 Official Firmware Download List

Samsung rolled out the firmware for the following countries. The firmware which are unbranded or not locked to any carrier, no matter of which country or region, can be flashed on any Galaxy S3 GT-I9300 model.
Mexico: I9300UBUGML2_I9300UVYUGML2_IUS.zip
[Firmware for rest of the countries and carrier will be added here when available]

Previous Firmware Build

Samsung Galaxy Grand 2 Duos SM-G7102- How to Install G7102XXUANB2 Android 4.3 Jelly Bean Firmware
Samsung Galaxy Trend Plus GT-S7580- How to Install S7580XXUBNA4 Android 4.2.2 Jelly Bean Firmware
Samsung Galaxy Grand Neo GT-I9168- How to Install I9168ZMUANB2 Android 4.2.2 Jelly Bean Firmware
Samsung GT-I9500 India INU- Android 4.4.2 Official Firmware Update guide

Pre-Requisites:

• Check battery percentage, your device should have at least 60% battery power
• Turn on USB Debugging mode, go to Settings-Developer Options-USB Debugging
• Backup important data and settings to external storage- follow this guide
• Install USB driver for your device on your computer- Download Samsung USB Driver

Points to be noted:

• If you are using any Custom ROM such as- CyanogenMod, Paranoid Android, AOKP, SLIM ROMs etc, then it’ll replaced by this official Stock ROM
• Custom Recovery (CWM or TWRP Recovery) will be replaced by Stock Recovery
• After flashing official firmware, your device will no longer belongs to rooted device. However you can root your device any time after flashing the firmware.

All the above pre-requisites are very important and must follow before proceed to installation guide. Hope you get all the above points. Now, go through the below tutorial to install Android 4.3 I9300UBUGML2 official firmware on Galaxy S3 I9300.

How to Install Android 4.3 Jelly Bean Official Firmware on Galaxy S3 I9300 through Odin:

1. Download Android 4.3 UBUGML2 Firmware for Galaxy S3 I9300 from the above list
2. Download Odin 3.09
3. Switch off your phone and boot Galaxy S3 I9300 into Download Mode by pressing and holding the Volume Down+Home+Power buttons (long press until the boot screen appear), now press Volume Up key to proceed to Download Mode.
4. Extract the downloaded Odin3.09 zip file and run the Odin3 v3.09.exe file as an administrator (Right click on the .exe file and click on Run as administrator)
5. Now connect your Galaxy S3 I9300 to your computer via USB cable
6. In Odin3 screen, you should see a COM Port number like “0:[COM7]” at ID:COM section and “Added!” text at the message box. This means your device has been detected by Odin3.
7. Make sure that, only the “Auto Reboot” and “F. Reset Time” options are checked.
8. Now, extract the downloaded firmware zip file, you’ll find a firmware file with extension .tar.md5
9. In Odin screen, click on AP button and select the firmware file with .tar.md5 extension (The firmware file look something like: I9300XXDLJ5_I9300ODDDLI7_INU.tar.md5)
10. Now, click on the Start button to begin the installation process, wait few moments.
11. Once completed, you would see “PASS!” message in ID:COM port having green background
12. Your phone should automatically reboot after completion
13. You can now disconnect your phone from computer
14. Finish

So, you have just finished the tutorial to update Android 4.3 Jelly Bean official firmware on Galaxy S3 GT-I9300. If you followed everything as mentioned in the above tutorial, then your device should now running on the latest Android 4.3 Jelly Bean build version UBUGML2. You can verify the firmware update details from Settings-About Phone. So, enjoy all the new features and improvements on your device and don’t forget to share your experience in the comment below.