Tips & Tutorials

How to Install Galaxy S3 I9305 XXBMA1 Android 4.1.2 Jelly Bean Official Firmware

Galaxy S3 I9305 LTE can now be updated to the latest XXBMA1 Android 4.1.2 firmware which is now available for download. No new features added, but it is always good to ahve your phone updated to the latest software update. You can download this Android 4.1.2 update from Samsung KIES or follow our manual tutorial below. I9305XXBMA1 is being rolled out to places with I9305 LTE devices over the world. We have written down an easy tutorial for you to install XXBMA1 Android 4.1.2 on Galaxy S3 I9305 manually. You can now also root Galaxy S3 I9305 on this firmware!

As you continue reading below, we will guide you through the entire process of how to update Galaxy S3 I9305 LTE with XXBMA1 Android 4.1.2 Jelly Bean using ODIN flashing tool. We also have some great tips on how to backup your Android devices and some more important tips that you have to keep in mind. Don’t forget to backup all your apps and personal data as a precaution. This firmware is completely unbranded and any Galaxy S3 I9305 can install. Let’s continue with the tutorial now.

XXBMA1 Android 4.1.2

Disclaimer: All the custom ROMs and firmwares, official software updates, tools, mods or anything mentioned in the tutorial 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 😉

Android 4.1.2 XXBMA1 Firmware Details:

Version: 4.1.2
Date: 2013-01-07
Regions: Austria, Belgium, France, Germany, Hungary, Italy, Spain, United Kingdom

If you plan on rooting this phone or are still confused for why to root Galaxy S3 I9305, read: Benefits of Rooting Your Android Device.

Looking for the root tutorial? Go to the following link for a detailed tutorial with step-by-step instructions on how to root Galaxy S3 I9305 Android phone:

Galaxy S3 Android 4.1.2 Firmware New Features:

  • Android 4.1.2 – JZO54K
  • Multi-View (Multi-Windows Multitasking, same as in Note II)
  • Page Buddy
  • New Gallery App (Same as in Note II)
  • Notification Panel (Notification Panel can now be customized)
  • Brightness Slider in Notification Panel Can Now Be Disabled
  • Smart Rotation (Screen Display adjusts to your angle of sightings)
  • Continues Input in Samsung Keyboard (Like Swipe or Android 4.2 Keyboard)
  • Paper Artist App
  • Group Cast App

Samsung Galaxy S3 USB Drivers

You will need to connect your Android phone with the computer. For that, please make sure you have installed the USB drivers for Samsung Galaxy S3 properly. If not, you can download the latest official drivers from our Android USB Drivers section here:

Download Samsung Galaxy S3 USB drivers!

Backup and Other Important Tips

Done with the USB drivers? Perfect. The tutorial is on the next page, but first, please take a look at the following tips and important points you need to take care of. These are important, as we don’t want anyone losing their personal data or apps:

Always backup your important data that you might need after you install a new custom ROM, an official software update or anything else. Make a backup for just in case, you never know when anything might go wrong. See below for some tips on how to backup data:

Samsung users can also back up data using Samsung KIES. If you backup data manually, you get more options what to 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.

If you already have a custom recovery (ClockworkMod, TWRP etc.) installed on your phone, we strongly recommend a backup using that as it creates a complete image of your existing phone set up.

A few more optional tips that you should remember:

1. Having problems connecting your Android phone to the computer? You need to enable USB debugging mode. See here: How to Enable USB Debugging — for Gingerbread, Ice Cream Sandwich and Jelly Bean.

2. Make sure your Android device is charged up to 80-85% battery level. This might help you: How to Check Battery Percentage. Why? Because, if your phone goes off suddenly while installing a custom ROM, flashing an official firmware update or installing mods etc. — your phone might get bricked or go dead permanently. No one wants that, right?

4. Most of the tutorials and how-to guides on Team Android are for factory unlocked Android phones and tablets. We recommend NOT to try our guides if your phone is locked to a carrier, unless we have specified the carrier name or device model.

If you find the above tips useful and they were helpful to you, please consider giving us a +1 or LIKE to thank us!

All set and ready? Good. You can now head over to the next page and update Galaxy S3 I9305 to XXBMA1 Android 4.1.2 official firmware update.

About the author

Haris Nadeem

He lives on everything Android; has countless devices, apps and games to play with everyday. Currently serving as the Chief Editor at Team Android.

1 Comment

  • It’s for France (Orange) will this cause problems for other countries/carriers? Why can’t we get a stock ROM from Samsung for each country with no branding i.e carrier-free?

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