June 19, 2014


Install CosmicCM Android 4.4.2 KitKat on Galaxy Grand Duos I9082 — Custom ROM

Samsung Galaxy Grand Duos I9082 receives CosmicCM Android 4.4.2 KitKat Custom ROM from XDA Developers on 13 June 2014. CosmicCM Android 4.4.2 KitKat ROM for Galaxy Grand Duos is based on Official Android 4.4.2 KitKat — an amazing ROM built from Android Open Source Project (AOSP) with additional features, performance and battery life improvements. Android 4.4.2 KitKat was just released a few Month back to Galaxy family of devices, but developers have already started to port their existing AOSP custom ROMs to this latest version of KitKat. This ROM is very stable, fast and smooth ROM. You can update Galaxy Grand Duos I9082 to CosmicCM Android 4.4.2 KitKat Custom firmware using the tutorial below. Your Galaxy Grand Duos I9082 should be rooted and have a custom recovery (ClockworkMod recovery / TWRP recovery) installed. This is not an official release by Samsung, but just a custom ROM of XDA Developers. This Galaxy Grand Duos update would require a custom recovery in order to flash the ROM zip file on your phone.

CosmicCM Android 4.4.2 KitKat

As you continue reading below, we will guide you through the entire process of how to install CosmicCM Android 4.4.2 KitKat Custom Rom on Galaxy Grand Duos I9082 using CyanogenMod. Don’t forget to backup all your apps and personal data as a precaution. It is always better to make a backup before doing anything with your Android device. 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.

Also see:
Disclaimer: All the official firmwares, custom ROMs, software updates, themes, mods, tools, apps, or anything provided in our blog belongs to their respective developers. Most of the custom ROMs we are providing here are from XDA Developers. We (iDroid Horizon) or the respective developers are not responsible if any of our tutorial damage or brick your device. However if you follow our instruction properly, we hope it would not bring you in trouble. If you face any problems with our tutorials, please comment below. We are sure that we can bring your device in original position.
NOTE: During the installation process, or after installing the ROM you do not like it, you can always revert back to an official firmware and fix all your problems. This might help you:
Like this CosmicCM ROM based on the latest Android 4.4.2? We love it too and we know you are looking forward to install it on your phone now. Now please read below for important tips on how to make sure your installation goes smooth and you do not end up with any problems.

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

Backup and some important tips

Done with USB Driver? Good. Now here we go for some work that you must do before installing this firmware. Please follow the important points that you need to take care of, as we don’t want anyone losing their personal data or apps:
Backup your all important data and apps because during any installation of a new custom ROM or Official Firmware , your device will be wiped and cleaned with new operating system. Make a backup for just in case, you never know when anything might go wrong. Read below for some important tips on how to backup Android data in a easy process:
Samsung user can also backup data by using Official Sumsang Kies. If you backup data manually, you will get more options for what to choose from. You can also move your data to other Android devices from different manufacturers, i.e moving Samsung Galaxy S5 backup data to Google Nexus 10. 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.

Few more important things that you must remember before installing any custom ROMs or Official Firmwares:

  • You might face some problems in connecting your Android device to the computer. How to fix? You need to enable USB debugging mode. See here: How to Enable USB Debugging — for Gingerbread, Ice Cream Sandwich and KitKat.
  •  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?
  • Most of the tutorials and how-to guides on iDroid Horizon are for factory unlocked Android devices. We recommend NOT to try our guides if your device is locked to a carrier, unless we have specified the device model or carrier name.
If you find the above tips useful and they were helpful to you, please consider giving us a +1 or LIKE on facebook to thank us!

All set and ready? Good. Now, let’s proceed with the tutorial below and update Galaxy Grand Duos I9082 to CosmicCM Android 4.4.2 KitKat custom firmware.

How to Update Galaxy Grand to CosmicCM Android 4.4.2 KitKat Custom ROM :

We have put together a detailed step-by-step instructions guide on how to install CosmicCM Android 4.4.2 KitKat custom firmware on Galaxy Grand I9082. If you are used to installing custom ROMs on your Galaxy Grand I9082, then this should not be any different for you.

However, for beginners, you need to root your Samsung Galaxy Grand Duos and install a custom recovery. Please Google that up if you are unsure and make sure you read the tutorial once before actually performing it on your device.

To Remember:
  • This tutorial is only for installing CosmicCM Android 4.4.2 KitKat ROM on Samsung Galaxy Grand Duos I9082. Please do not try on any other Galaxy Grand variants.
  • Your phone should be rooted and have ClockworkMod recovery installed from before.
  • This tutorial will wipe out all your data. Proceed at your own risk.
  • Perform a Dalvik Cache wipe before proceeding from the recovery mode.
  • Samsung KIES will NOT detect your phone after installing this ROM because it is a custom firmware.
  • Make sure you backup all your data in your phone before proceeding.

Entire Step-By-Step procedure:

Step 1 - Download CosmicCM Android 4.4.2 KitKat Custom firmware and Google Apps for Galaxy Grand Duos I9082 to your computer.

Step 2 - Connect and mount your Galaxy Grand I9082 USB memory on your computer using the USB cable.

Step 3 - Now copy/paste the downloaded Android 4.4.2 ROM zip file to your SD card. Make sure the file is in the SD card root (not in any folder).

Step 4 - Then turn OFF your phone and disconnect from the USB cable.

Step 5 - Now to get in the Recovery Mode. Switch ON the phone while pressing and holding Volume Up + Home + Power buttons together. You will get an exclamation mark now. Again, hold your Volume Up + Power buttons. You should now be in your Recovery Mode.

Step 6 - Once you are in ClockworkMod Recovery, select perform a full data wipe by selecting “wipe data/factory reset”  Use the Power button to select everything while in the Recovery Mode.

Step 7 - Then, perform a cache wipe by selecting “wipe cache partition” 

Step 8 - Now this is optional, but it is recommended to perform a wipe of your dalvik cache as well. You will not get into boot loops or any other errors. From CWM recovery, go to ‘advanced’ and then select “wipe dalvik cache”.

Step 9 - Then go back to the main recovery screen and select “install zip from SD card”.

Step 10 - Now select “choose zip from sdcard”. Using your volume keys, navigate to the CosmicCM Android 4.4.2 KitKat file that you copied to your SD card and select it using the Power button. Confirm the installation on the next screen and the installation procedure should start now.

Step 11 - After the installation completes, go to “+++++Go Back+++++” and reboot the phone by selecting “reboot system now
Note: Repeat the same step of installation as in step 10 with Google Apps after installing CosmicCM Android 4.4.2 KitKat.
Your Galaxy Grand Duos I9082 will boot now and it might take about 5 minutes to boot on your first time. So, please wait.
That’s it! Your Galaxy Grand Duos I9082 should now have CosmicCM Android 4.4.2 KitKat Custom Rom installed on your phone! Go to Settings > About phone to verify.

Need Help?

If you run into any problems during Updating Galaxy Grand Duos I9082 to CosmicCM Android 4.4.2 KitKat Custom ROM,  feel free to drop us a comment below and we will reply you back ASAP with the fix or the solution to your problem.


  1. نسخه زباله تعبت فى تحميلها وتصطيبها وفى الاخر طلعت مليانه اخطاء اهمها ان الهاتف لا يشحن وهو مغلق بمعنى انه لو خلص شحن هيتعبك اوى علشان يشتغل تانى ده غير المايك صوته وااااطى وحجات تانيه