Tips & Tutorials

Install UBDLI2 Android 4.1.1 Jelly Bean OTA Test Firmware on Galaxy S3 I9300

The first test Jelly Bean firmware of Galaxy S3 I9300 is here for the users in Brazil. We have already seen tons of test firmwares for United Kingdom region, but now it seems Samsung is expanding their test firmwares reach with new releases almost every day. Galaxy S3 I9300 can now be updated to UBDLI2 Android 4.1.1 Jelly Bean OTA firmware from this step-by-step tutorial we have written for you. Remember, this is just an OTA update (not a full firmware) because of which, you will need to install I9300UBCLG7 as the base firmware first and then install the new I9300UBDLI2 Jelly Bean OTA firmware update. We have the full tutorial below as you read this post and also a tutorial to root UBDLI2 firmware.

As you continue reading this post, we will guide you through all the steps of installing UBDLI2 Android 4.1.1 Jelly Bean OTA firmware on Galaxy S3 I9300. Don’t forget to backup all your personal apps and settings as given below, just as a precaution because you never know what might go wrong while installing a test firmware. Jump over to page 3 for UBDLI2 firmware if you already have Android 4.0.4 UBCLG7 installed. Let’s continue with the tutorial now.

Samsung Galaxy S III - Pebble Blue

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We ( 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 😉

NOTE: Since this is a leaked firmware, make sure you know that after installing this firmware update, your can get FC errors, boot loops, several other bugs, apps might not work or worse, your phone might not boot. To fix, you will have to reinstall stock firmware.

Android 4.1.1 UBDLI2 Firmware Details:

Base Firmware: I9300UBDLI2 (4.1.1)
Region South America
Country: Chile (Telefonica)
Carrier: Unbranded
Build Date: 14th September 2012
Modem: UBDLI2
Change List:

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. (optional, when updating via ODIN).

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 update Galaxy S3 I9300 to UBDLI2 Android 4.1.1 Jelly Bean official OTA firmware.