OnePlus Custom ROMs How to Updates

How to Update OnePlus One to Marshmallow CM 13 ROM [Official]

The OnePlus One is got the Marshmallow update, now it is possible to update OnePlus One to Marshmallow via CM 13 custom ROM. The OTA update is already rolling out for OnePlus smartphone if you got the OTA notification then update our smartphone easily. Or the OTA not notify you yet, and you want to update manually then we share today the easy and simple guide to update OnePlus One to Marshmallow CM 13 ROM. Follow up the full article and update your smartphone to the latest firmware.Update OnePlus One to Marshmallow CM 13 ROM

This update is based on Android Marshmallow, and it has all the latest features and new apps. The update comes with a ZNHOEAS26M build number, and size of firmware is 484.43 MB. For OnePlus One has come many custom firmware which based on Marshmallow, but the CM 13 custom ROM is official which is fully packed version and stable on OnePlus One smartphone. So gain the process if you are interested to update OnePlus One to Marshmallow CM13 ROM.

Before step towards to install CM 13 ROM on Oneplus One, keep read some important guide. And then proceed the main steps to update OnePlus One to Marshmallow CM 13 ROM.

Important Guide

  1. This guide is compatible only with OnePlus One smartphone, don’t use this updating tutorial in any other devices.
  2. The guideline is only for Stock Recovery and un-rooted devices.
  3. And the update is Incremental, so you can update it over CM12.1 only.
  4. Download the OTA Marshmallow firmware for OnePlus One smartphone. Download here

How to update OnePlus One to Marshmallow CM 13 ROM


Step 1: First, download the Marshmallow CM 13 OTA zip file from the above link. And transfer the zip file to your smartphone Internal storage.

Step 2: And then Turn OFF your smartphone completely, and boot OnePlus One to Recovery Mode.

Step 3: To booting OnePlus One to recovery mode, simply press and hold the Power + Volume Down key at the same time for a while.

Step 4: And now your device boot into the Stock Recovery.

Step 5: After that, select Apply Update and select Choose from Internal Storage.

Step 6: Now find and select the OTA zip file, that you download in the above link. And proceed the updating process to Marshmallow on your OnePlus One smartphone.

Step 7: Wait for the updating process, until the process will complete. And then Reboot your smartphone.

Good job! You have successfully update OnePlus One to Marshmallow CM 13 ROM. Now enjoy your smartphone with latest features and advanced design.

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About the author

Nadeem Khan

Nadeem Khan has founder and owner of, he has Master in Computer Science (MCs) and enthusiastically interest in techs News and updates. Also, part-time watching news videos, playing Games and a deep lover of Web developer and Web designing.

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