Download/Install OxygenOS Open Beta 27/18 For OnePlus 3 and OnePlus 3T

Now OnePlus has started rolling out OxygenOS Open Beta 27/18 For OnePlus 3 and OnePlus 3T based on Android 8.0 Oreo.The update is now available for download.It is carrying the latest October 2017 Security Patch Update.This update is also a beta update and we are sure in coming days stable OxygenOS Oreo build will be made available for both OnePlus 3 and OnePlus 3T.

The latest OxygenOS Open Beta 27/18 for OnePlus 3 and OnePlus 3T comes with new fresh UI for Do Not Disturb.This update optimized the standby battery usage.It also brings improvements to the system stability and Performance.If you are running the previous OxygenOS Oreo Beta on OnePlus 3 or OnePlus 3T we recommend you to Download and Install OxygenOS Open Beta 27/18 On OnePlus 3 and OnePlus 3T

If you have the previous OxygenOS beta build installed, then you may have received the OxygenOS Open Beta 27/18 OTA (Over-the-air) notification.To manually check Go To Setting  then scroll down to System Updates > Check For Updates.If the update is not showing up then wait for few more days for the update to come or you can manually flash the update by following the guide given below.

What’s New In OxygenOS Open Beta 27/18:

  • New UI for Do Not Disturb
    • We’ve made the Do not Disturb setting easier to understand
  • Optimized standby battery usage
  • Smart Text Selection improvements
    • This option should now work as intended
  • General performance improvements
  • Updated OnePlus and GMS applications
    • We’ve updated OnePlus Gallery, and fixed some bugs in Weather, Recorder, and File Manager
  • Updated Google security patch (October 2017)
  • Other bug fixes and optimizations
    • Updates to language localization, fixes for extended screenshot in some applications, bluetooth performance enhancements, camera gesture fixes, and memory optimizations

DISCLAIMER is not responsible for any damage happened to your device(s) while following this guide, Proceed at your own risk.


  • This Update is only for OnePlus 3/3T Smartphones.
  • Follow the below Guide Exactly or else it may lead to brick your device. is not responsible for any damage.
  • We recommend to take complete backup and proceed.
  • Maintain 50-60% battery to prevent sudden shutdown between the process.

Download OxygenOS Open Beta 27/18 for OnePlus 3 and OnePlus 3T

How To install OxygenOS Open Beta 27/18 on OnePlus 3/3T

OxygenOS Open Beta 27/18 For OnePlus 3 and OnePlus 3T

  1. First, Enable “USB Debugging” on your OnePlus 3/3T. Guide  How to Enable Developer Options, USB Debugging and OEM Unlock on Android
  2. Now download and install adb drivers on your PC
  3. Install the OnePlus USB drivers On PC
  4. Download Open Beta 18 and 9 for OnePlus 3 and 3T.
  5. Then, switch off your phone and reboot into recovery mode (To do that First Switch off your phone, Now press and hold volume down button + power button.)
  6. In recovery menu, choose “Install from USB,” tap on OK to confirm. You will see “You are in sideload mode” screen will be displayed.
  7. Now execute the following codes
adb devices
  • Now, Install Open Beta 18 and 9 on OnePlus 3 and 3T executing the following command.
adb sideload <finename>
  • Wait until the installation process completes
  • Done!!!

Source: OnePlus

Dibyashree Sharma
Dibyashree Sharma
Dibyashree Sharma, who graduated in Computer Science from NIT Rourkela, is an experienced blogger and an enthusiast of Android technology. She has spent eight years writing about Android OS, earning a reputation as a reliable source in the technology field. Away from the digital sphere, Dibyashree enjoys playing tennis, a sport she is as passionate about as she is about technology.

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