Tips & Tutorials

Update Galaxy Grand 2 Duos G7102 to XXUBNH3 Android 4.4.2 KitKat Official Firmware

Galaxy Grand 2 Duos G7102 can now be updated to KitKat with this new XXUBNH3 Android 4.4.2 firmware update. Previously, this device was running Android 4.3 Jelly Bean and was waiting it’s due update to Android KitKat. XXUBNH3 Android 4.4.2 is a major update which will refresh the UI, performance capabilities and compatibility with apps so you can expect a whole new experience after updating. Unfortunately, Samsung will release this update slowly to every region via Samsung KIES and OTA (over-the-air) update. If you want to try out this update package then you can easily follow our manual method. G7102XXUBNH3 is an official firmware update, not a modified or custom ROM. You can easily update Galaxy Grand 2 Duos G7102 to XXUBNH3 Android 4.4.2 KitKat official firmware and root Galaxy Grand 2.

As you continue reading below, we will guide you how to install XXUBNH3 Android 4.4.2 KitKat on Galaxy Grand 2 Duos G7102 using ODIN. We have also given some tips on how to backup your phone data and have given some other important tips. Don’t forget to backup all your apps and personal data as a precaution. First priority is always your data’s safety so be sure that you have also backed up your photos as well as documents/downloads which you might have accumulated over time. Let’s continue with the tutorial now.

Samsung Galaxy Grand 2 Duos G7102 - XXUBNH3 Android 4.4.2 Jelly Bean

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 😉

XXUBNH3 Android 4.4.2 Firmware Details:

Model: SM-G7102
Model name: GALAXY Grand 2 DUOS
Country: India
Version: Android 4.4.2
Changelist: 2462295
Build date: Fri, 08 Aug 2014 10:44:07 +0000
Product Code: INU

You might find these following Galaxy Grand 2 Duos G7102 related articles interesting:

If you plan on rooting this phone or are still confused for why to root Galaxy Grand 2 Duos G7102, read: Benefits of Rooting Your Android Device.

Samsung Galaxy Grand 2 Duos 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 Grand 2 Duos properly. If not, you can download the latest official drivers from our Android USB Drivers section here:

Download Samsung Galaxy Grand 2 Duos 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 KitKat.

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 Grand 2 Duos G7102 to Android 4.4.2 XXUBNH3 official firmware update.

About the author

Taimur Akmal

Devoted writer, enjoys developing code. Appreciates excellent food, exceptional coffee and great company. He is also into sublime design and nicely built cars.

1 Comment

  • i upgraded my galaxy grand 2 android 4.3 to the latest firmware using
    kies it upgraded successfully but my phone will boot as if to start with
    samsung and the model number showing but it wont start it keeps doing
    like that vibrating as if to start . pls help me what do i do?

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