The Android Oreo based OxygenOS Open Beta 29 /20 update includes a new Note app, OTG toggle in Quick Settings menu, new weather widget and latest security patches (December 2017). If you are already on Open Beta channel, you will receive the OTA (over-the-air) update in the coming days. Alternatively, download and install the update manually.

Below is the full changelog of OxygenOS Open Beta 29/20: If you prefer manual installation, OxygenOS 29/20 Open Beta full firmware is available for download. You can install the ROM manually on OnePlus 3/3T as given below. – Take notes quickly and simply – Share notes as picture – Memo widget on Shelf is editable Quick clipboard – Enhanced copying and editing ability Weather – New weather widget File Manager – Added large files category – Speed improvements while deleting massive files System – Added OTG toggle in Quick Settings – Added notification when 3rd party apps delete contacts – Updated Android security patch to December – General bug fixes and improvements

How to Download and Install OxygenOS Open Beta Manually

Note: This guide requires ABD and fastboot set up on your PC. Also, both devices require unlocked bootloader. Backup all data before proceeding.

  1. Download OnePlus 3 Open Beta 29 firmware package from here [coming soon] and Open Beta 20 for OnePlus 3T from here [coming soon].
  2. Enable ‘USB Debugging’ on your phone in Settings > Developer Options.
  3. Switch off OnePlus 3/3T, press Power + Volume Down buttons together to boot into stock recovery.
  4. In recovery, choose “Install from USB” option, tap OK to confirm. A screen with “You are in sideload mode” will be displayed.
  5. Connect your OnePlus 3/3T to PC/Mac and issue the following command in command prompt /terminal For Windows: adb sideload File Name.zip For Mac/Linux: ./adb sideload File Name.zip [File Name.zip=OxygenOS Open Beta file name]
  6. Wait a while, your phone should now update to the selected build and reboot automatically to take you into new OxygenOS . (Source – OnePlus)