How To Downgrade Android 10 To Android 9 Pie

Most software engineers recommend us to always use the latest version of an app or operating system. But not everybody can agree with every single change from an update. For example, there are many people who don’t like Windows 10 and are gladly preferring the good old Windows 7 instead.

But this time it’s about mobile devices, not the big ones. Android is at the 10th version, but programmers from Google also did a great job with Android 9 Pie, which for some people it was a more efficient and smoother operating system.


Before downgrading and assuring yourself that the previous version of Android is the one suitable for you, you must back up your photos, videos, music, apps, and the rest of the files. They will all be wiped out along with your current version of the operating system.

The next step is to download an Android 9 Pie factory image designed specifically for your device. You’ll have to seek online an official factory image for your phone’s type and model. It’s absolutely mandatory to download it from a trustworthy source.

For the next operation, you should be sure that you have the following tools:

  1. The original OEM USB cable to connect your phone to your computer. If you don’t have the original, use a high-quality cable instead.
  2. The Android SDK installed on your machine with ADB and Fastboot command successfully working.
  3. 7zip or a similar program that can handle .tgz and .tar files.
  4. An unlocked bootloader on your phone.

Now you’re ready to proceed to the actual downgrading process!

Downgrading Android 10

  1. Turn on developer options on your smartphone by finding the About Phone section in Android settings and tapping “Build Number” seven times.
  2. Enable USB debugging and OEM unlock on your device in the now-visible “Developer options” section.
  3. Ensure that you have backed-up all your important files. Don’t forget that the whole process will delete them forever!
  4. Boot your smartphone into bootloader mode. You can do this on most phones by turning it off and then powering back on by holding down both the power button and the volume down button at the same time.
  5. Plug your smartphone into your PC using the USB cable.
  6. Open a command prompt window on your PC with admin privileges and start ADB.
  7. Ensure your phone and PC are communicating correctly by typing fastboot devices into your command prompt window. You should see your device’s serial number listed.
  8. Prepare the factory image you downloaded earlier. Use 7zip to extract the .tgz file you downloaded and then again to extract the .tar file you extracted from the .tgz.
  9. Copy all those files and paste them in the platform-tools folder within the Android SDK folder on your computer. You should find it in the Program Files (x86) folder on Windows.
  10. There are two flash-all files. Windows users should double-click the one that has the gear logo and says “Windows Batch File” on the right. If you’re on Linux, double-click the
  11. A box will pop up and you should see the installation starting. While this is going on, do not unplug your device for any reason!
  12. When the installation process has finished, your device will automatically reboot into Android 9 Pie.

It’s anybody’s decision to have which version of Android or any other operating system they want on their gadget. And most of all, what other things could you do with an operating system than downgrading, if it makes your phone lag? And a lagging phone can become more annoying and frustrating than being sick at your birthday party or being robbed by Santa Klaus.

Austin Barrie

Austin Barrie

Austin Barrie is still early into his career as tech reporter but has already published most of his work in a few books, he obviously talks about them in some of his pieces here.

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