How to flash Android 8.1 Developer Preview Factory Image for Nexus 6P

The official Android 8.1 Developer Preview first builds are now available for the Nexus 5X, 6P and Pixel smartphones.

If you own the Nexus 6P and you want to take a look at all the new Oreo 8.1 features, then you should check the info in this post in order to learn how to manually install the factory image.

Android 8.1 OREO Developer 1st Preview build adds the following changes: Dark / Light SystemUI theme that’s based on the Wallpaper just like it previously did for Pixel phones only; the Quick Settings panel now will be semi-transparent, new Settings UI; a new Oreo Easter Egg, revamped Navigation bar that dims automatically when it’s inactive, new Power Menu UI like on Pixel 2 devices, and more others.

Before starting the flashing process you need to check the guidelines below:

  • use this tutorial only for the Google Nexus 6P smartphones.
    – don’t try to update any other devices with the files found in this post.
  • you have to open Developer Options and enable USB Debugging from Developer Options menu.
    – if you cannot find Developer Options you will need to enable this menu first: go to Settings> About Device and tap seven times on the Firmware Build Number text.
  • open Developer Options, find USB Debugging and enable it.
    – enable OEM Unlock option, too.
  • installing the new Factory Image will wipe the entire smartphone completely of all the files.
    – make sure to backup all the important data files before starting the installation process.
  • this guide has to be applied by advanced users, we cannot be blamed in case you brick the device nor in case you lose any data files.
  • check battery charge level and make sure that there is enough power left before the device switches off.

Now that you’ve read all of that you can continue to the next part of this post. Make sure to read the whole post and to not skip any steps.

Remember that the installation of the Android 8.1 Developer Preview 1 build is going to wipe all the files from your Nexus 6P.

Install Android 8.1 Factory Image Preview 1st Build for Nexus 6P:

The first thing that you need to do is to setup the Android ADB and setup the Fastboot drivers. By installing these files you will allow your PC to detect the phone when connected via usb cable.

For the device to be detected you will simply need the Android ADB platform-tools files, and then you will be able to connect the phone to PC.

Here’s how to install them:

  • download Platform-Tools zip from the links below – make sure to download the file corresponding to your computer’s OS:
    – for Windows click here.
    – for Linux click here.
    – for Mac OS click here.
  • when the download is done you have to extract the archived contents and save them on your PC.
    – leave the new Platform-Tools folder opened.
  • download the Google USB drivers from here and install them on your PC.

Continue to the next part of this post after you’ve configure the files above.

Install Android 8.1 Developer Preview 1st Build Factory Image for Nexus 6P:

  1. Download the Android 8.1 Preview 1 Factory Image from here.
  2. After the download is completed successfully you will have to extract all the files to “Platform-Tools” folder.
    – that’s the folder you obtained while setting up the ADB drivers above the tutorial.
  3. Power off your Nexus 6P.
  4. Now boot it in Fastboot Mode.
  5. Connect the Nexus 6P to PC via usb cable.
    Wait for the phone to be detected by the computer.
  6. Get to Platform-Tools folder and launch a Command Prompt / Terminal screen with administrator rights.
  7. In CMD/ Terminal window enter the following command line to unlock the device’s bootloader: fastboot flashing unlock
    – confirm the process.
  8. Get back to Platform-Tools folder.
  9. Launch the Flash-all.bat installer script for Windows PC. For Linux / Mac OS you need to launch the script instead.
  10. Confirm the Android 8.1 Oreo Preview 1 Factory Image installation.
    Don’t press any buttons until the flashing process is done.
  11. When the new factory image has finished installing you will see a confirmation alert.
    Reboot your phone in normal mode and unplug it from computer.

Use your usual Google account in order to regain control over your device once again.

If the install process fails you will need to repeat the whole tutorial more than once. Make sure that you will not skip any steps, and that your device meets all requirements before starting the installation process. Also, you can tell us in comments if you need any extra help.

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