The OxygenOS Open Beta 27/18 brings new UI for Do Not Disturb, optimizes standby battery usage, improvements in Smart text selection and includes updated OnePlus and GMS applications. Also, the update includes several bug fixes and optimizations alongside latest Google security patch (October 2017).

If you are signed up for OxygenOS Open Beta program, you will get the new Android 80 Oreo based OxygenOS Open Beta 27/18 OTA (over-the-air) update on your device. You can also download and install the update manually. Below is the full changelog of OxygenOS Open Beta 27/18: Note: OxygenOS Open Beta 27/18 OTA update will get on all OnePlus 3/3T that are signed up for the Beta program. Other users can download and flash the ROM manually. Check out the guide below. Also Read: How to Downgrade OnePlus 3/3T to Nougat Based OxygenOS Open Beta

How to Download and Install OxygenOS Open Beta Manually>/h4>

  1. Download OnePlus 3 Open Beta 27 full firmware package [here] or [here].
  2. For OnePlus 3T, download Open Beta 17 full firmware package [here] or [here].
  3. After downloading the firmware, follow this installation instruction Note: If you prefer stable version, then stick on the OxygenOS 4.5.1 (current stable version) for OnePlus 3/3T which is based on Android 7.1.1 Nougat. (Source – OnePlus)