Update Galaxy S3 I9300 to XXEMC2 Android 4.1.2 Jelly Bean Official Firmware

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Samsung Galaxy S3 can now be updated to XXEMC2 Android 4.1.2 firmware update that was released earlier today. The latest official Jelly Bean update doesn’t bring any new features, but we would recommend you to keep your phone up-to-date as minor bugs are all fixed with new software updates. This update already has been released over Samsung KIES and if you didn’t get it, don’t worry, since we have the manual Odin method tutorial for you. I9300XXEMC2 firmware is an official firmware by Samsung so it doesn’t require a custom recovery like CWM. You can easily update Galaxy S3 I9300 to XXEMC2 Android 4.1.2 official firmware and also root this firmware! This firmware is complete unbranded, which means it can be installed on any International Galaxy S3 I9300 phone.

As you continue reading below, we will guide you how to install XXEMC2 Android 4.1.2 Jelly Bean on Galaxy S3 I9300 using ODIN, tell you how to backup your important data and have given some other important tips. Don’t forget to backup all your apps and personal data as a precaution because you never know when there could be an issue and all your data could get lost. The following tips are important as they will help the installation procedure to go smooth without any issues. Let’s continue with the tutorial now.

Samsung Galaxy S3 I9300 - XXEMC2 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 (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 4.1.2 XXEMC2 Firmware Details:

PDA: I9300XXEMC2
CSC: I9300OXAEMC2
Version: 4.1.2

ANDROID 4.2.1 LEAKED FIRMWARE: Android 4.2.1 Jelly Bean official test firmware was leaked a few days ago. Want to try? Read the tutorial here!

ROOT TUTORIAL: How to Root XXEMC2 Android 4.1.2 on Galaxy S3 I9300 Official Firmware.

Previous Jelly Bean official firmware tutorials for Galaxy S III:

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 I9300 to Android 4.1.2 XXEMC2 official firmware update.


  • tom

    after the download finished how much it takes for the phone to get to the main screem i mean home screen?