After being rolled out Android 8.0 Oreo for OnePlus 3 and 3T, OnePlus just released the Android 8.0 Oreo for OnePlus 5, in Beta channel though. The OxygenOS Open Beat 1 update will get on your device via OTA, if joined for OxygenOS Open Beta program. Others should download the full firmware and flash it manually as described below.
If you install OxygenOS Open Beta 1 on your OnePlus 5, you can experience Android 8.0 and its new features like PIP (Picture in Picture), notification dots, Smart text selection, Auto-fill, revamped Quick Settings menu, October 2017 security patches and more. Below is the full changelogs of this new update.
Below are the full changelog of OxygenOS Open Beta 1 for OnePlus 5:
Updated to Android O (8.0)
Added Picture in Picture
Added Smart text selection
New Quick Settings design
Added Parallel Apps
Updated security patch to October
Added notification dots
New app folder design
Now able to upload photos directly to Shot on OnePlus
Although in beta, the firmware is stable and reliable, so users can use it as daily driver. However, install it at your own risk.
How to Download and Install Android 8.0 Oreo Based OxygenOS Open Beta 1 on OnePlus 5
1. Download OnePlus 5 Open Beta 1 full firmware package from here.
2. After downloading the firmware on your computer, follow this installation instruction.
Important note: If you want to go back to previous build, you should download the downgrade build and flash it via stock recovery. Here is how it is.
How to Downgrade OnePlus 5 for OxygenOS Open Beata 1
Note: The below procedure will wipe app and cache data, but Internal Storage will be saved.
1. Download special build for OnePlus 5 from here and copy the file to internal storage.
2. Reboot your phone in to recovery Mode.
3. Choose “Install from Local”
4. Choose the downloaded build to install.
Keep in mind that all files mentioned above are beta, so you may experience bugs and it is unstable. (Source – OnePlus)