Get Official Android 8.1 Oreo based AOSP Extended ROM on OnePlus 3/3T


OnePlus released its Oreo update for the OnePlus 3 and 3T a while before, but there are some ditches rounding the OS and which affect your phone’s performance. OnePlus bring its flagships with prices much lower than what the big manufacturers in the smartphone market demanded for their best smartphones. OxygenOS provides many ways to customize the phone, so you can also have the option to switch the order of the back and recent apps buttons, and if you want software keys OnePlus provides that as an option as well. Moreover, you can now have a Custom ROM installation to your device. Follow this simple tutorial on how to Install Official Android 8.1 based AOSP Extended ROM on OnePlus 3/3T.

OnePlus 3/3T have a better variety of specs and hardware. The devices show a great deal of promise with updated OS and with a slight change in the processor say Snapdragon 820 for OnePlus 3 and Sd 821 for OnePlus 3T which certainly improve performance. The devices featured with nominal contrast display with 1080 x 1920 pixels resolution. There’s also a whopping 6GB of RAM which will access your needs better. The AOSP Extended ROM on OnePlus 3/3T brings a phenomenal change which mainly boasts your OS Customizations.

AOSP Extended ROM

The AOSP ROM, the purest form of Android straight from Google provides stock UI/UX with various customizations features along with the Substratum theme engine. It comes packed with plenty of customization right off the bat. The ROM comes pre-rooted so it saves you a flash of SuperSU. It also packs extra settings in the Settings menu which allows you to customize everything from your status bar, battery settings, lock screen and much more. As a customary, you can get rid of bloatware and modify the device endlessly as er your desire. AOSP EXTENDED rolling out to be the predominant ROM with better customizations. Even the well known Custom ROM CyanogenMod is forked from AOSP. So now you can flash this penultimate  AOSP Extended ROM on OnePlus 3/3T.


  • Latest Security Patches
  • OTA updates
  • DUI(Fling/Pulse/Smartbar)
  • Expanded Desktop
  • VIA Browser
  • AEXPapers
  • Heads up Customizations
  • Battery Styles and Percentage
  • Advanced Ambient Display
  • Night Mode QS Tile
  • Flip Button Animations
  • LockScreen Shortcuts
  • Advanced reboot
  • Extensions
  • Performance
  • Open Source
  • Dynamic notification drawer headers
  • And a lot more…

Here’s a quick view on how to install AOSP Extended ROM on OnePlus 3/3T.


  1. Your device needs to have at least 60% charge to ensure it doesn’t run out of battery during the installation process.
  2. Enable USB Debugging on your phone. To do this, go to the device Settings » Developer options » toggle the “USB Debugging” switch.
  3. Install ADB & Fastboot tools on your PC. You can follow our simple guide which lets you install ADB & Fastboot tools in 15 seconds.
  4. Make sure you have the latest TWRP on OnePlus 3/3T. You can download the latest TWRP from here and follow the TWRP installation tutorial.


How to Install Official AOSP Extended ROM on OnePlus 3/3T

  1. Download and transfer the AOSP Extended ROM and Gapps to your device’s internal storage.
  2. Reboot into recovery mode.
  3. Make a nandroid backup of your device in TWRP recovery. To do this, navigate to Backup option, select the partitions available and swipe right to make a backup.
  4. Format your device, once the backup is completed.
  5. In TWRP recovery, click on Wipe » Advanced Wipe. Select data, system, cache and, Dalvik-cache on this page and wipe them.
  6. Go back to TWRP main menu, tap on Install and select the AOSP Extended ROM file in your internal storage. Swipe to confirm OS flash.
  7. Now flash the Gapps Zip same as the ROM file.
  8. Reboot your device once both the files are flashed.

It will take some time on the first boot, nearly 5-10 minutes. Once the device boots up, you’ll be welcomed with the AOSP Extended OS setup screen.


Dinesh is responsible for tech tutorials at TechBeasts. Dinesh's expertise are mostly in the Android and iOS ecosystem.

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