Install Android 6.0 Marshmallow on Galaxy Grand Duos [AOSP]


Android 6.0 Marshmallow is making it’s way towards several devices either in Stock updates or AOSP ROM. Popular Sony devices have already got in the form of AOSP and now Samsung Galaxy Grand Duos is the first Samsung device to taste the sweetness of Android 6.0 Marshmallow. Developer tested the Galaxy Grand Duos compatibility for latest firmware and the affirmative results led the AOSP release of Android 6.0 Marshmallow. The Android 6.0 Marshmallow for Galaxy Grand Duos is not an official update but it is based on pure AOSP ROM and has all the feature of Stock Android 6.0 Marshmallow.

There are multiple benefits of installing custom ROM on your device which unfortunately can’t find in the stock firmware. The Custom ROMs gives you freedom to customize and tons modifications to enhance device performance further you can install themes to customize the device look. You can easily revert back to Stock firmware whenever you wish to do so, just go ahead and you will be guided through complete process to install Android 6.0 M on Galaxy Grand Duos.

How to install Android 6.0 Marshmallow on Galaxy Grand Duos I9082/I9082L

Disclaimer: This tutorial includes multiple operations which includes installing Custom ROMs, Custom recovery and root. Follow the guide on your own risk, we are not responsible if you brick or damage your device however the chances of bricking a device are rare but you have to pay full attention on the complete guide to avoid any issues and difficulties while performing any of the above mentioned operation.


  • Please ensure your phone battery should be charged at minimum 80%
  • Download and install latest USB drivers
  • Your device should have a working CWM or TWRP recovery installed or follow this guide.

Download Android 6.0 Marshmallow build specified for your Galaxy Grand Duos from the below provided link.

Download Galaxy Grand Duos Android 6.0 Marshmallow ROM

Download Google Apps for Marshmallow (Gapps)

Process to install Android 6.0 Marshmallow on Samsung Galaxy Grand Duos I9082/I9082L

In this tutorial we are using the ClockworkMod recovery flash process.

Connect your device to PC and transfer the ROM and Gapps zip files on your device storage.

Turn of your device and boot into CWM custom Recovery menu by the hardware keys combination or using any third party app (Mostly found in Play store).

Once your device enters into CWM recovery, create a Nandroid backup of your device or follow our guide to create a Nandroid backup (this will create a backup of your complete device including current firmware) if something goes wrong you can restore your previous firmware.

Once the Nandroid process completes, navigate and select wipe data/factory reset.(this will erase your data)

Now it’s the time to flash the Android 6.0 Marshmallow ROM on your device. Choose “install zip from sdcard” >> choose zip from sdcard & navigate to the folder in which you have copied the custom file and select it.

Select “yes” to confirm install, wait for a few minutes till the file is completely installed in your device.

Once done with the above step, now apply the same process with the installation of Android 6.0 Marshmallow gapps.

Wait for the installation process to complete. The first boot up may take 5-7 minutes.

If your device is taking longer then 7-10 minutes then follow this guide to to fix this issue 

That’s it! You have successfully installed Android 6.0 Marshmallow on your Galaxy Grand Duos I9082/I9082L. Experience the latest features of Android 6.0 Marshmallow custom ROM on your device. If you have any query feel free to contact us by posting your queries in the below provided comment section. Follow us on Facebook/Twitter/Google+ for future update.

A Software Engineer who loves to hang around latest gadgets and writes his own experiences to get the best possible and accurate information.
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