I9300XXUGNG3 Android 4.3 Jelly Bean Firmware For Samsung Galaxy S3 GT-I9300 - How To Guide

Download I9300XXUGNG3 Android 4.3 Jelly Bean, the latest firmware for GT-I9300 that rolled out in 12-Sept-2014. I9300XXUGNG3 firmware for Galaxy S3 I9300 rolled out in various countries including Bulgaria, Serbia, Hungary, Greece, Romania, Macedonia, Czech Republic and Germany. Apart from usual via KIES and via OTA update, you can also flash or install XXUGNG3 Android 4.3 Jelly Bean on Galaxy S3 I9300 manually. Since the device already updated to Android 4.3 Jelly Bean, this is just a normal firmware update that fix some bugs, enhance security and may introduce some new features. Read through this step-by-step guide to learn how to install official stock I9300XXUGNG3 Android 4.3 Jelly Bean firmware on Galaxy S3 GT-I9300. I tried to discuss every possible ways to flash this firmware on your device. Please note, you can't flash below given file using CWM recovery or TWRP recovery, also note installing official firmware restore kernel hence your root access will be void, in other word - your device will be unrooted.

Rooting Guide: Root I9300XXUGNG3 Galaxy S3 GT-I9300 Android 4.3 Jelly Bean Firmware - How To

As said already I9300XXUGNG3 Android 4.3 Jelly Bean stock firmware available on both OTA and Kies update. In case, if you can’t get the update from there then you can always install I9300XXUGNG3 Android 4.3 Jelly Bean firmware on Galaxy S3 GT-I9300 manually. You should always try OTA or Kies method first and when both method don’t work then only try manual flashing.

Recommended Readings:

• Update Samsung Galaxy S3 GT-I9300 To Android 4.4.4 KitKat Using MoKee ROM [How To]
• Update Galaxy S3 I9300 with Android 4.4.4 Omni ROM KitKat [How To]
• Install Android 4.4.4 CM11 Milestone 9 KitKat ROM on Galaxy S3 I9300 – How To Instruction
• Install Android 4.4.2 CM11 Milestone 4 KitKat ROM on Galaxy S3 I9300 – How To Instruction

Warning: This tutorial is only for Galaxy S3 GT-I9300. Don’t try this guide on any other Android device. Also, we (Android Pulp Team) are not responsible for any damage caused due to the instruction given in this page. Try this at your own risk. However, it is very unlikely that your device will be damaged if you follow all the instructions as it is which are mentioned in procedure.

Pre Requisites:

Though official firmware restore all existing data but we recommend to back up your data first before proceeding to avoid any uncomfortable situation such as bootloop fix.

1. If you installing this firmware over official firmware then you don't need to backup anything (though recommended) since the new firmware will restore everything from previous firmware. However, if you flash it over any custom ROM then you must backup the data.You can follow our ultimate backup guide.

2.  Make sure your device have at least 60% battery power. If your phone shut down during installation then there is good chance to brick your device.You can install an app like Battery Notifier BT Free on your Android device to check it easily

3. You already have USB Driver Installed for Galaxy S3 GT-I9300 in your PC. [Download USB Drivers]

4. Make sure USB Debugging is enabled otherwise you won’t able to transfer file between PC and Galaxy S3 GT-I9300. [Guide]

5. Manual update will be done using a tool called Odin which support Windows system only.

How To Update Galaxy S3 GT-I9300 via OTA

1. A stable internet connection (Wi-Fi or data network) is required, so check it first.
2. Now, go to Android app drawer and then select Settings.
3. Then locate About Device and tap on it.
4. Next select Software update from About device screen.
5. Then tap on Update option.
6. You should see an update, press OK to download and install. (Remember, download using 3G or network data will incur additional charges to your phone bill!)
7. Soon your device will reboot to complete the installation process.

If you see “The latest update have already been installed” massage while checking update then your device yet to receive an OTA update. Check back within few days or jump to next procedure.

How To Update Galaxy S3 GT-I9300 via Kies

1. A stable internet connection is required, so check it first.
2. Now download and install Samsung Kies on your computer.
3. Turn on your device (if it off) and then connect it to computer with USB cable.
4. Run Samsung Kies and wait for it to detect your device.
5. You should see a New Firmware Upgrade is available at Samsung Kies home screen.
6. Press the Firmware Upgrade button to proceed.
7. Follow on screen instruction and soon you will see your device running upgrade and reboot automatically. Once done, you can disconnect your device from computer.

Again! If you see “This is the latest firmware” in Samsung Kies, then your device yet to receive this latest update on Kies. Its good time to go for manual update instruction that located below.

[Note: You can install any firmware listed below despite availability in other countries, except those which comes with carrier name.]

* I9300XXUGNG3 Stock Firmware List Updated On September 12, 2014. 

I9300XXUGNG3 Android 4.3 Jelly Bean Firmware Downloads

Bulgaria (MTL): I9300XXUGNG3_I9300MTLGNG2_MTL.zip

Serbia (VIP): I9300XXUGNG3_I9300OXFGNG2_TOP.zip

Hungary: I9300XXUGNG3_I9300OXFGNG2_XEH.zip

Greece: I9300XXUGNG3_I9300EURGNG1_EUR.zip

Romania (Cosmote): I9300XXUGNG3_I9300OXXGNG1_COA.zip

Macedonia: I9300XXUGNG3_I9300VIMGNF1_VIM.zip

Czech Republic (O2C): I9300XXUGNG3_I9300O2CGNG1_O2C.zip

Germany: I9300XXUGNG3_I9300DBTGNG2_DBT.zip

[Please Note: Flashing or installing official firmware will remove custom ROM including CM11, AOKP, Avatar, Beanstalk, Omni ROM, Slim ROM, Pac-Man, Paranoid Android, LiquidSmooth or Carbon.]

[Note: Torrent or resumable download link isn't available right now. We may provide it if available from any trusted source. You can always buy premium membership account to speed up your download.]

How To Install I9300XXUGNG3 Android 4.3 Jelly Bean On Galaxy S3 GT-I9300 Manually

1. Download Odin v3.09.
2. Extract the downloaded firmware zip in a convenient location of your PC, you will get a .tar.md5 file and some other files (optional). Don't extract the file twice, else you will end up with some unflashable file.
3. Extract Odin zip file and you will get Odin3 v3.09.exe along with few other files.
4. Power off your Android device. Wait 5-6 seconds for vibration to confirm complete switch off.
5. Now, put the Galaxy S3 GT-I9300 in Download Mode by pressing and holding down the Home & Volume Down button together while pressing the Power button. A warning screen will come up; press Volume Up button to enter Download Mode.
6. Now run Odin3 v3.09.exe (see Step 3) as an Administrator because Admin privileges is required to complete the process smoothly (only applicable Windows Vista and higher).
7. Now connect your device to your PC using USB cable. You will see an “Added!!” massage in Odin’s message box. If you don’t get the same then you should try another USB port (try USB port located in back in your desktop PC). If that too don’t work then you should reinstall the driver. If you successfully see the “Added!!” message in Odin then you are ready to go in next step. You should also see COM port with a number in Yellow if you successfully added your device.
8. Click the AP Button, and select that .tar.md5 file that you get in Step 2. If you are using old Odin then add the file to PDA button.
9. In Odin window, make sure only Auto Reboot and F. Reset Time checkboxes are selected.
10. Double check everything that we mentioned in Step 8 & Step 9 above. Now, once satisfied hit the START button to begin the flashing process.
11. Once flashing completed, your Galaxy S3 GT-I9300 will restart and soon you will see a PASS message with green background in the left-most box at the very top of the Odin. You can now unplug the USB cable to disconnect your device from computer.

Congrats! You just updated your Galaxy S3 GT-I9300 to I9300XXUGNG3 Android 4.3 Jelly Bean firmware. Go to Settings > About device to verify this firmware update.

How To Fix Boot Loop Issue On Galaxy S3 GT-I9300

If Galaxy S3 GT-I9300 stuck at booting animation for more than 10 minutes after final step then follow below instructions:

1. Boot into recovery mode. To do so, press and hold the Volume Up, Home and Power buttons together till Samsung logo flash twice then leave Power button.
2. Now perform Wipe data/Factory Reset and Wipe Cache Partition task before selecting reboot system now function. In recovery mode use Volume keys to navigate between options and Power button to select a option.

You should know, performing wiping task will erase your device internal memory data and not external SD card data.

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