Downgrade Oneplus 9 To Android 11 Fixed Jun 2026

Note: If "Local Install" is missing, you may need to install the OnePlus Local Update APK specifically designed for newer OxygenOS versions.

Note: The screen may look like it’s stuck on the boot logo for up to 10 minutes. This is normal.

Then, the OnePlus boot logo appeared. Not the new ColorOS one. The old, familiar, reassuring logo.

This process will irreversibly erase all your data, including photos, apps, and messages. Downgrade Oneplus 9 To Android 11

Note: If the file downloads with a .jar extension instead of .zip , rename the file on your phone's file manager to end exactly in .zip . Step 2: Enable Developer Options

Move photos, contacts, and documents to a cloud service or a PC. Battery Charge: Ensure your phone is charged to at least 30-50%. Verify Model/Region:

Link to the specific rollback files for your . Explain how to bypass the auto-update feature. Recommend the most stable final version of OxygenOS 11. Let me know how you'd like to proceed with the downgrade . Share public link Note: If "Local Install" is missing, you may

Ensure you download the correct rollback package for your specific regional model (Indian, Global, or European). Using the wrong package can cause serious issues. Phase 1: Preparing Your OnePlus 9

Before we dive into the process, let's discuss some reasons why you might want to downgrade to Android 11:

Even with careful planning, you may encounter problems. Here are some common issues and potential solutions: Then, the OnePlus boot logo appeared

Upgrading to the latest version of Android usually brings exciting new features, updated visual designs, and the latest security patches. However, new updates can sometimes introduce unwanted bugs, rapid battery drain, app incompatibilities, or changes to the user interface that simply do not fit your personal preferences.

Go to and tap Build Number 7 times to unlock Developer Options. Go back to Settings > System > Developer Options . Find Automatic System Updates and toggle it OFF . If you run into any issues during the setup, let me know:

Once the installation finishes, the system application will prompt you to restart your device. Tap the button on your screen.

: Download the correct rollback file for your specific region (IN, NA, or Europe) to avoid bricking your device. Method 1: Local Upgrade (Recommended)