Update Galaxy S3 with Android 4.3 I9300XXUGMJ9 Firmware

After the Android 4.3 firmware released for Samsung Galaxy S4 I9500 and I9505, new Android 4.3 I9300XXUGMJ9 Firmware is available for the Samsung Galaxy S3 users. If you are the Samsung Galaxy S3 GT-I9300 users and want to try the new Android 4.3 Jelly bean update on your device, then today you are at the right place. Today in this guide we will show you ho you can manually update your device with this new Android 4.3 Jelly bean firmware. This is the first ever Android 4.3 leak for the Galaxy S3 Android smartphone and this the test firmware and Samsung may add or remove features in future test builds of Android 4.3.

So, if you want to try this new leaked firmware on your device, then read our step by step guide to download the firmware and install the same on your device. This test firmware will not increase your binary counter nor void your warranty. But if you have the rooted S3, then you will lose the root access on your device after this update. To get the root access again read our guide here.

Update Galaxy S3 with Android 4.3 I9300XXUGMJ9 Firmware


Pre-requisites and Requirements

a) Before following the guide do take the Full Backup of your Android Apps, SMS, Contacts, Call Logs, Bookmarks. Looking for more ways to get the Backup your android device click here. So in case if you lost some of your important data and files in the update or rooting process, then you can easily restore them from your backup file. Read also how to take the backup of WhatsApp messages and restore it.

b) Once the backup files are saved on your device or on your desktop, Enable USB debugging mode on your device, read the guide here how to enable USB debugging mode.

c) Make sure that your Galaxy S3 battery is full charge or near about 60-70% battery level.

d) Download the Latest Samsung USB drivers on your PC and install it to start the update  process. You need these drivers to connect your device with the computer to follow this guide.

After following the above mention steps follow the below mention guide one by one to update Galaxy S3. All the above mention steps are very important, so do follow all the steps and do exactly what is told.

Install Android 4.3 I9300XXUGMJ9 Firmware on Samsung Galaxy S3

Step 1. Download the Android 4.3 I9300XXUGMJ9 Firmware here and extract the folder on your desktop.

Step 2. Download ODIN flash tool here and extract the folder on your desktop.

Step 3. Turn off your phone and boot in download mode to start the firmware update process. To do this press and hold Home + Power + Volume down buttons. Press Volume Up button again to enter into Download Mode.

Galaxy S4 Download Mode

Step 4. Once your phone is in download mode, connect you phone to the PC with USB cable.

Step 5. Run the ODIN application on your desktop. wait until you get a blue sign in Odin. Now Load the firmware files (extracted in Step 1) in Odin as instructed below:

– Add AP_I9300****************.tar.md5 to AP
– Add BL_I9300*****************.tar to BL
– Add MODEM_I9300**************.tar.md5 to CP
– Add CSC***********************.tar.md5 to CSC


Next, ensure that the check boxes “Auto Reboot”, “F. Reset Time” and “PDA” are the only check boxes checked and the rest are not. And Make sure re-partition is NOT ticked on the ODIN application.

Step 6. Click start button, sit back and wait a few minutes.

Step 7. Once the update process is finished on your device you will see the “PASS” message on your screen. Now your phone will restart automatically and at this time you will disconnect your phone from the computer.

Congratulations! Galaxy S3 is updated with the latest Android 4.3. In case at the time of restart your device stuck on Android loop or stuck on Android boot screen, then follow this guide to come out of Android loop.


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