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The latest and greatest Android build, 4.4.2 KitKat, is now available for the Samsung Galaxy Grand Duos thanks to an Omni ROM from XDA developer k2wl.
This guide will walk you though the installation process for Omni ROM on the Galaxy Grand Duos bearing the model number I9082. As always, androidstray assumes no liability for the firmware installation. Proceed with caution.
Before Getting Started
Do not use this guide for any device other than the Galaxy Grand Duos (I9082 model). Flashing this ROM onto any other device will most probably result in a bricked phone.
You must have your Galaxy Grand Duos rooted, with a recovery utility like ClockworkMod installed. As always, you want to backup your device and charge it to at least 80 percent.
Finally, enable USB Debugging mode by navigating to Settings -> Developer Options.
Updating Galaxy Grand Duos to Android KitKat 4.4.2 via Omni ROM
1) Download the Android 4.4.2 KitKat Omni ROM and the Google Apps package, which can be found here and here.
2) Using your USB cable, connect your Galaxy Grand Duos to your computer.
3) Copy Omni ROM custom ROM and the Google Apps package to the root folder of your handset’s SD card. Do not extract either.
4) Boot your phone into Recovery mode by pressing the Volume Up, Home and Power buttons simultaneously until you see a Galaxy Grand Duos logo, then release all three to enter recovery mode.
5) Perform a factory reset by selecting “Wipe data/Factory reset.”
6) In CWM recovery, navigate to “Format system” in the Mounts and Storage submenu, and then press “Yes.” Next, navigate to the Advanced submenu and select “Wipe Dalvik Cache.” Select “Yes” when prompted.
7) Navigate to “Install Zip from SD card” and select the ROM downloaded earlier. After the ROM is installed, repeat this step to install Google Apps.
8) After the installation is complete, press “Go back” and then select “Reboot system now” to restart your phone. This may take some time.
9) After restarting, your Galaxy Grand Duos will be running Android 4.4.2 KitKat Omni ROM. Kudos.