In this guide you will be able to install Android 6.0 Marshmallow on your Samsung Galaxy S2 GT-I9100. Galaxy S2 is a 4 years old device and still developers are working on this device and developed the latest Android 6.0 Marshmallow CM13 ROM. Android 6.0 Marshmallow is the latest firmware which has already been released for Nexus devices, other devices are still in the waiting list but it seems the wait is soon going to be over.
Android 6.0 Marshmallow for Galaxy S2 is not an official update but it’s a custom ROM and is only compatible with GT-I9100, do not flash this ROM in any other variants. The ROM is currently in the testing stages and you may experience some bugs but if you are really getting impatient to see the latest firmware on your Galaxy S2 GT-I9100 then go ahead and continue along guide to install Android 6.0 Marshmallow on Galaxy S2 GT-I9100.
How to install Android 6.0 Marshmallow on Galaxy S2 GT-I9100
Disclaimer: This tutorial includes multiple operations which includes installing custom ROMs and more. Follow the guide on your own risk, we are not responsible if you brick or damage your device however the chances of bricking a device are rare but you have to pay full attention on the complete guide to avoid any issues and difficulties while performing any of the above mentioned operation.
Enable USB Debugging (Settings >> Developer Options >> USB debugging)
Your phone battery should be charged minimum 60%
Custom recovery like TWRP must be installed on your device or follow this guide
Download these files:
Download USB drivers.
Download Android 6.0 Marshmallow ROM for Galaxy S2 GT-I9100
Download Android 6.0 Marshmallow Google Apps (Gapps)
Process to install Android 6.0 Marshmallow on Galaxy S2 GT-I9100
Just follow the below simple steps in sequence to update Android 6.0 Marshmallow on your Galaxy S2 GT-I9100
Connect your device to your PC using USB cable and transfer the downloaded CM13 ROM zip along gapps.zip on the internal storage of your device.
Turn of your device and boot into custom Recovery menu by the hardware keys combination or using any third party app (Mostly found in Play store).
Once your device enters into recovery mode, create a Nandroid backup of your device or follow our guide to create a Nandroid backup (this will create a backup of your complete device including current firmware) if something goes wrong you can restore your previous firmware.
Once the Nandroid process completes, navigate and select wipe data/factory reset.(this will erase your data)
Now it’s the time to flash the CM13 ROM on your device. Choose “install zip from sdcard” >> choose zip from sdcard & navigate to the folder in which you have copied the custom ROM.zip file and select it.
Swipe to confirm install, wait for a few minutes till the file is completely installed in your device.
Now perform the same method to install gapps.zip on your device.
Once completed, reboot your device.
If your device is taking longer then 7-10 minutes then follow this guide to to fix this issue
Once the process is completed, reboot the device.
That’s it, you have successfully installed Android 6.0 Marshmallow on Galaxy S2 GT-I9100. If you have any query feel free to contact us by posting your comment in the below provided comment section. Follow us on Facebook/Twitter/Google+ for future update.