After releasing the beta version in March, OnePlus has released the OxygenOS 3.0.2 update based on Android 6.0.1 Marshmallow for the OnePlus 2 smartphone. The update is now available via OTA (over-the-air).
Apart from the obvious updates of Android 6.0.1 Marshmallow, OnePlus has also brought the Enhanced Doze mode, improved fingerprint sensor, new camera UI and AF optimization, Swiftkey update to 6.3.3, etc. The update file is over 1.1 GB, so it’s better if you have at least 1.5 GB free space and good WiFi network to download it.
If you haven’t received the OTA notification, you can check it manually also via Settings > About phone > System updates > Check for update.