How to Install Android 4.0.4 UBBLG2 on Galaxy S3 I9300 Stock Firmware

• Last modified: Tips

Samsung has announced they are working on an official Jelly Bean Android 4.1 software update which they would be rolling out soon for everyone. For now, newer Android  4.0 builds keep releasing for the Samsung Galaxy S3 I9300. You can install Android 4.0.4 UBBLG2 using the tutorial below.

This latest I9300UBBLG2 was released by Samsung over KIES for Peru (SAM) in Brazil. The modem build is TFGBLG2 and the firmware build date is 30th July 2012. Download from the link given below.

As you continue reading below, we will guide you through the entire process of how to install the official software update Android 4.0.4 UBBLG2 ICS on Galaxy S3 I9300 using ODIN. We have covered all the steps and download files you need in the tutorial below. Please make sure you backup all your apps and personal data as this tutorial will wipe all your data. Let’s continue with the tutorial below.

Samsung Galaxy S III - Pebble Blue

Disclaimer: All the tools, mods or ROMs mentioned below 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 ;-)

Android 4.0.4 UBBLG2 Firmware Details:

PDA: I9300UBBLG2
CSC: I9300TFGBLG2
Version: 4.0.4
Date: 2012-07-30
Regions: Brazil

Make sure you have installed all your USB drivers for the Samsung Galaxy S III to connect it with the computer. Download Samsung Galaxy S3 USB drivers! Apart from just the USB drivers, there are a few more things that you need to take care of.

1. You need to enable USB debugging mode. This helps to connect your Android phone with the PC. See here: How to Enable USB Debugging.

2. Your phone battery should be 80-85% charged. If your phone goes off suddenly because of battery, during flashing ROMs or installing mods and updates — your phone might go dead permanently. See here: How to Check Battery Percentage.

3. Backup all your important data that you might need as soon as your flash a new ROM, or make a backup for just in case, you never know when anything might go wrong. See below on how to backup data:

Data can also be backed up using Samsung KIES for their devices, but if you backup data manually, you get more options what top 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.

4. Your phone should be factory unlocked. Additional instructions for locked Android devices will be added in the tutorial for unlocking devices.

Now, let’s proceed with the tutorial on the next page and install UBBLG2 Android 4.0.4 on Galaxy S3 I9300.