How To: Provide Samsung Galaxy Grand Duos I9082 / I9082L with CyanogenMod 12

The Samsung Galaxy Grand Duos

CyanogenMod 12 is a popular build in the Android ecosystem because it caters both to the low end and high end devices, and versions circulating among these devices vary from official ROM builds to unofficial ROM builds. Users of Samsung Galaxy Grand Duos would be delighted to know that developers have created an unofficial build of CyanogenMod 12. As should be expected, this version comes with bugs and other issues, but this can be addressed and will be improved as updates come over time.

This article will teach users of the Samsung Galaxy Grand Duos I9082 / I9082L. Before proceeding, here are the things that you need to accomplish and keep in mind:

  • This step by step guide will only work for Samsung Galaxy Grand Duos I9082 / I9082L. If you are not sure about your device model, you may check it by going to your Settings menu and clicking ‘About Device’. Using this guide for another device model may cause bricking, so if you are not a Galaxy Grand Duos user, do not proceed.
  • Your remaining battery percentage should not be less than 60 percent. This will prevent you from having power issues while the installation is ongoing, and therefore will prevent soft bricking of your device.
  • Backup all of your data and files to avoid losing them, including your contacts, messages, call logs, and media files. This will ensure that you will always have a copy of your data and files. If your device is already rooted, you may use Titanium Backup. If you already have an installed TWRP or CWM custom recovery, you may use Nandroid Backup.
  • Also backup your mobile’s EFS
  • Use only your phone’s OEM data cable so that that the connection is stable
  • Your Samsung Galaxy Note 3 should be rooted
  • You need to flash TWRP or CWM custom recovery
  • Download CyanogenMod 12
  • Download Google Apps


Note: The methods needed to flash custom recoveries, roms and to root your phone can result in bricking your device. Rooting your device will also void the warranty and it will no longer be eligible for free device services from manufacturers or warranty providers. Be responsible and keep these in mind before you decide to proceed on your own responsibility. In case a mishap occurs, we or the device manufacturers should never be held responsible.


Step by Step Installation Guide:

  1. Connect your Samsung Galaxy Grand Duos to your computer or laptop
  2. Copy the zip files to the root of your device’s SD card
  3. Remove your OEM data cable from your computer
  4. Shut down your Galaxy Grand Duos
  5. Enter Recovery Mode by pressing and holding the power, home, and volume up buttons until a text appears on the screen


For CyanogenMod Recovery Users:

  1. Through the Recovery Mode, back up your phone’s ROM
  2. Go to ‘Back-up and Restore’, then when the next screen appears, click ‘Back-up’
  3. Return to the home page and go to ‘Advance’
  4. Select ‘Wipe Dalvik Cache’
  5. Select ‘Wipe Data / Factory Reset’
  6. Go to ‘Install zip from SD card’ and wait for the new window to open
  7. In the Options menu, look for ”Choose zip from SD card’
  8. Choose the zip file ‘CM 12’ and allow the installation to proceed
  9. Press ‘Go Back’ as soon as the installation has been completed
  10. Click ‘Reboot Now’ to allow your device to restart


For TWRP Users:

  1. Click ‘Back-Up’
  2. Choose ‘System and Data’ then move the confirmation slider
  3. Press ‘Wipe’ and choose Data, System, Cache
  4. Move the confirmation slider
  5. Return to the main menu and allow the installation to proceed
  6. Look for the zip file ‘CM 12’ and Google Apps then move the slider to continue with the installation
  7. Click ‘Reboot Now’ to allow your device to restart


How to Solve Signature Verification Error:

  1. Open Recovery Mode
  2. Go to ‘Install zip from SD card’
  3. Go to ‘Toggle Signature Verification’. Click the power button and check if it is disabled. Make sure that it is disabled
  4. Install the zip file


Congratulations! At this point, you have successfully installed CWM on your Samsung Galaxy Grad Duos. The first boot of your device after the entire process can take as much as five minutes. Be patient and give your phone that five minutes to rest.


If you have additional questions about this easy step by step process, do not hesitate to ask through the comments section below.



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