Install Android 6.0 Marshmallow on Galaxy S6 via Unofficial CM13 ROM



Android 6.0 Marshmallow for Samsung Galaxy S6 is now available via Unofficial CyanogenMod 13. The CM13 ROM is currently in the development stages and most of the feature may not work fine, you can visit this XDA page to view the detail about the working/non working features of CM13 ROM for Galaxy S6. The CM13 ROM for Galaxy S6 is based on Android 6.0 Marshmallow and is compatible with Galaxy S6 SM-G920F/I, SM-G920S and SM-G920K.

Now you can enjoy the latest firmware on your device beyond Android Lollipop. All you need is a custom recovery to flash the Google apps and the Marshmallow ROM on your Galaxy S6, we have already posted guides on the AOSP builds for several other devices you can have an overview of them and in this guide we are going to use the same process. Just go ahead and install the latest firmware Android 6.0 Marshmallow on your Samsung Galaxy S6.


How to install Android 6.0 Marshmallow on Samsung Galaxy S6 with CyanogenMod 13

Before you Begin:

Disclaimer: This tutorial includes multiple operations including Custom Rom, custom recovery etc. 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.


  • Please ensure your phone battery should be charged at minimum 80%
  • Download Samsung USB drivers
  • Your device should have a working TWRP or CWM recovery installed in your device.

Necessary downloads:

Process to install Android 6.0 Marshmallow with CM13 on Samsung Galaxy S6

Connect your device to your PC and copy the both ROM and google apps zip files onto your device storage.

Turn of your device and boot into TWRP custom Recovery menu by the hardware keys combination or using any third party app (Mostly found in Play store).

Once your device enters into TWRP recovery, 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, tap on “Wipe” and then swipe the slider from left to right to begin the wipe process (This will reset your device to factory)

Now it’s the time to flash the CM13 firmware in your device. Choose install and navigate to the folder in which you have copied the ROM zip file

Swipe across the slider to confirm install, wait for a few minutes till the file is completely installed in your device.

Once done with the above step, now apply the same process with the installation of CM13 Gapps.

Wait for the installation process to complete.

Once completed Reboot your device.

If your device is taking longer then 7-10 minutes then follow this guide to to fix this issue

That’s it! On reboot your device will be running Android 6.0 Marshmallow firmware on your Galaxy S6. If you have any query feel free to contact us by posting your queries in the below provided comment section. Follow us on Facebook/Twitter/Google+ for future update.

A Software Engineer who loves to hang around latest gadgets and writes his own experiences to get the best possible and accurate information.
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