Oneplus one users can now update their phone with the Official Android 6.0 Marshmallow CM 13.0 (ZNH0EAS26M). The update is already started now and most of the Oneplus One user already got the OTA update on the phone. The new update is based on the Android 6.0 Marshmallow and comes with lots of new features and improvements. To check the update on your phone go to the settings > About phone and check system update. You will see the 484.43 MB OTA update there. If the update is not available for your then you can use this guide to install the official Android 6.0 Marshmallow CM 13.0 (ZNH0EAS26M) update on Oneplus One. All you need an OTA zip file and have to flash with the help of recovery and you are done, The process is very simple and takes a few minutes to complete the whole task.
This guide is for both rooted and non-rooted Oneplus One users. The guide is only for the Oneplus One users and don’t try this method on any other phone. Read all the instruction very carefully and do take the full backup of your phone.
Install Official Android 6.0 Marshmallow on Oneplus One
Frist method is for the non-rooted oneplus one users with Stock recovery.
Step 1. Download the Android 6.0 Marshmallow CM 13.0 (ZNH0EAS26M) OTA zip file here and place the file on your phone’s internal memory.
Step 2. Now Switch off your Phone to boot in recovery mode.
Step 3. Now boot in recovery mode. Reboot into recovery by pressing power+volume down button .
Step 4. Now your phone is in the Stock recovery.
Step 5. Select The English Language from the main menu and Select Install from Local. And browse the OTA ZIP file that you save on your phone.
Step 6. Select the Zip and click on Install.
Step 7. Now the Android 6.0 Marshmallow installation process will start and it will take some time.
Step 8. Once completed. Reboot.
That’s it. Now your phone is running on the Android 6.0 Marshmallow
2nd Method – For Rooted user with TWRP recovery
Step 1. Download Android 6.0 Marshmallow CM 13.0 (ZNH0EAS26M) Full ROM Zip from here and put Zip file anywhere in the phone Internal Storage.
Step 2. Now Boot your phone into TWRP Recovery.
Step 3. From here select the Wipe option > Advanced Wipe > Select Dalvik, System, Cache > Swipe to wipe.
Step 4. Now go to TWRP Home. Select Install > Select Android 6.0 Marshmallow CM 13.0 (ZNH0EAS26M) Full ROM Zip > Swipe to install.
Step 5. Go to TWRP Home. Reboot into System.
Done. Now your phone is running on the Android 6.0 Marshmallow CM 13.0 (ZNH0EAS26M)