Step to install Android 6.0.1 Marshmallow Custom ROM to Samsung Galaxy Grand Duos GT-I9082 with CM13.0 custom ROM features. Download android 6.0.1 Marshmallow custom ROM and upgrade Galaxy Grand Duos GT-I9082.
Here is the update for your Samsung Galaxy Grand Duos GT-I9082 to latest android 6.0.1 Marshmallow OS to taste the latest OS version features with CyanogenMod 13 custom ROM. This custom ROM brings your SGG Duos GT-I9082 to stock Android 6.0.1 user interface from official firmware android 4.2.2 jellybean OS. At the same time, Samsung official failed to upload update the latest android marshmallow OS version via OTA.
Know about CyanogenMod 13.0 ROM: CyanogenMod is a free, community built, aftermarket firmware distribution of Android 6.0 (Marshmallow), which is designed to increase performance and reliability over stock Android for your device.
Hold on! This ROM update offers both SIM slot always works.
The Samsung Galaxy Grand Duos I9802 Custom ROM installation process may end up in no results or negative results too that means device software damage as well Grand Duos device hangs or startup problem or even SDcard dead. So it’s advised to you that apply this installation procedure at your own risk and the below procedure only for educational purpose. We shall not be responsible for any damage to your device.
Before entering Samsung Galaxy Grand Duos I9802 updates process,
Take a Complete backup because of any data and apps lost during installation.
Backup SMS, Contacts – Sync with the Gmail application or else use below app, Call Logs using “AllBackupRestore-ContactAPPSMS” and save it to online for restore
Images, Songs, Videos, Files – Copy to internal / External SD Card,
APN and MMS Settings – Note down from the path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names”
Already installed CWM Recovery mode with SELinux support and should have root access (Install easyrootchecker free to check your android device has Root access or Not)
Enable the USB Debugging Mode in your Samsung Galaxy Grand Duos I9802 device follow this step “Settings > Developer option > USB debugging”.
Minimum 65% battery need before start your work
Does not work on 4.1 stock ROM’s bootloader, please upgrade to stock 4.2 jellybean by following this simple guide Flash Samsung Galaxy Grand Duos official android 4.2.2 jellybean Stock firmware.
Open GApps: open_gapps-arm-6.0-stock-20160531.zip File size: 607.8MB Download
Step to install Android 6.0.1 Marshmallow custom ROM to Samsung Galaxy Grand Duos I9802
Download all above listed ZIP files to your computer or laptop and transfer zip file to Grand Duos root of your SD card
Switch OFF your Samsung Galaxy Grand Duos I9802 and Enter CWM Recovery by pressing Volume Up +Menu + Power buttons together and do full wipe (everything except SD card)
From Recovery Menu, use Volume Up or Down button for navigation
Go to choose from SDcard or install ZIP from SD card and install or flash zip in ClockworkMod Recovery and install or Flash Open GApps too.
Optional: After Android 6.0.1 CM13 custom ROM and Gapps ZIP files got installed DO A DATA WIPE / FACTORY RESET (Wipe dalvik cache) (otherwise your device will be stuck at boot)
Wait for 3 to 4 minutes and go to main menu and select ‘reboot system now’.
That it your Samsung Galaxy Grand Duos I9802 smartphone now ready to enjoy at latest Android 6.0.1 Marshmallow OS version with CM13 ROM features.
After rebooted check your device android version by checking Setting à About phone.