Earlier today, we told you that OnePlus is already testing the Oreo update for the OnePlus 3 in closed-beta group, which itself is incredible as the Android 8.0 OS is not very old at the moment. But guess what, in case you want to download the OnePlus 3 Oreo update, you can’t because no OTA or firmware is available at the moment — and likely won’t be until the official build is available under the public-beta release.

But here’s a solid, and reliable, way to install and run the Oreo update on your OnePlus 3 right now. We’re talking about LineageOS 15 ROM, that runs on Android 8.0 and is now available for both the OnePlus 3 and OnePlus 3T, speaking of which, the OnePlus 3T and OnePlus 5 are expected to have their own 8.0 closed-beta build available pretty real soon.

With the OnePlus 3/3T LineageOS 15 ROM, you can have some fun with new and cool Oreo features get to play with new features right away, and these include stuff like, new Settings app, new notifications center, notification snooze, picture-in-picture and Autofill.

Read: LineageOS 15 download and device list

Note that this is first build of the OnePlus 3/3T LineageOS 15.0 ROM, so it’s far from stable right now. If you wanna say hello to Oreo, then alright, go ahead and install it, but know that it’s a bit far from becoming your daily driver as on September 07, 2017.

OnePlus 3/3T LineageOS 15 ROM [Android 8.0 Oreo]

Compatibility and Warning

This ROM is only compatible with OnePlus 3 and OnePlus 3T. Do not try this on any other device.

Warning: Do not try anything given on this page if you do not know completely what you are doing. In case any damage occurs, we won’t be held responsible.

Downloads

Note: Check out the development page here at XDA for latest download link and changelog.

How to Install the LineageOS 15 on OnePlus 3/3T

Note: You need to have TWRP recovery installed on your device for this. In case you do not have it, download the required TWRP recovery from here (OnePlus 3 | OnePlus 3T) for your device as given above, and install it using the guide here.

  1. Download and transfer the Lineage OS ROM zip file and Gapps file that you downloaded above to your OnePlus 3/3T.
  2. Boot your smartphone into TWRP recovery.
  3. Select Wipe from TWRP main menu and do a Swipe to Factory Reset on the bottom of the screen. [Clean install is recommended, wipe everything except internal storage.]
  4. Go back to TWRP main menu, tap on Install and select the Lineage OS .zip file that you transferred to your OnePlus 3/3T in Step 1.
  5. After selecting the .zip file, do Swipe to Confirm Flash on the bottom of the screen to begin the custom ROM installation process. This may take some time.
  6. Once your ROM is successfully flashed, you’ll see Wipe cache/dalvik option, select it and then do Swipe to wipe on bottom of screen.
  7. Now, install the Gapps file the same way you installed the ROM file.
  8. After flashing both Lineage OS and Gapps, reboot your smartphone.

Read: Galaxy S9 release date and news

Credit: akhil narang