Samsung Galaxy J7 2015 model now getting Android 6.0.1 Marshmallow CM13 OS updates in form unofficial Custom ROM powered by CyanogenMod . install Android 6.0 Marshmallow CM13 custom ROM to Samsung Galaxy Grand J7 unofficially.
Google launched its new version of android OS 6.0 Marshmallow for its Nexus devices and major devices gets android 6.0.1 updates, there is no word about Samsung smartphone OS update for Samsung galaxy J7 (one of best selling model in 2015). But the unofficial stable version of android 6.0.1 marshmallow custom ROM available for J7 models inform of CyanogenMod version 13.0. The download link and guide to install or update your Samsung Galaxy Grand J7 to latest android 6.0 OS with CM13.0 custom ROM.
The Samsung galaxy Galaxy J7 H/F/M models Custom ROM installation process may end up in no results or negative results too that means device software damage as well your J7 device hangs or startup problem. 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.
Hold On – USB OTG (pendrive) not working
Before entering Samsung Galaxy J7 custom ROM updates process,
Take a Complete backup because of any data and apps lost during installation.
Use Nandroid backup to take complete existing ROM
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 “Apps > Settings > connections > More Networks > Mobile Networks > Access Point Names”
Already installed TWRP Touch recovery mode 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 J7 device follow this step “Settings > More > Developer option > USB debugging”.
Minimum 75% battery need before start your work
ROM: cm-13.0-20160521-UNOFFICIAL-j7eltexx.zip (ROM size: 270.4MB)-for latest ROM update and Bug report follow this XDA forum and donate developer at http://forum.xda-developers.com/galaxy-j7/development/cyanogenmod-13-0-samsung-galaxy-j7-h-f-m-t3325376
Open GApps: open_gapps-arm-6.0-stock-20160531.zip File size: 607.8MB Download
Step to install Android 6.0 Marshmallow CM13 custom ROM to Samsung Galaxy Grand J7
Download all above listed ZIP files to your computer or laptop and transfer zip file to Grand J7 root of your SD card
Switch OFF your Samsung Galaxy Grand J7 and Enter TWRP Recovery mode by pressing Volume Up +Menu + Power buttons together and do full wipe Cache and Dalvik (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 CM13.0… …zip in ClockworkMod Recovery mode and optionally install or Flash Open GApps too.
Optional: After Android 6.0 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 J7 smartphone now ready to enjoy at latest Android 6.0 Marshmallow OS version as uploaded in screenshot.
After rebooted check your device android version by checking Setting > More > About phone.