Downgrade Oneplus 9 To Android 11 Jun 2026

Wait for the installation to reach 100%. This typically takes 5–10 minutes. Once complete, tap

, which is a specialized utility for unbricking and deep downgrades via a Windows PC. This requires a computer and puts the phone into "EDL mode" by holding both volume buttons while connecting it via USB. Oneplus 9 Pro | Downgrade to OXYGEN OS 11

Use to back up contacts, calendars, and app data. Downgrade Oneplus 9 To Android 11

Find the official rollback package (a .zip file) for your specific regional OnePlus 9 model from the OnePlus Community Forums .

Tap or Upgrade . The phone will reboot into recovery mode and begin installing Android 11. Wait for the installation to reach 100%

Android 13 hides the local install option by default. You will need a utility tool to run the update.

This comprehensive guide provides a step-by-step walkthrough to safely roll back your OnePlus 9 to Android 11. Pre-Downgrade Checklist This requires a computer and puts the phone

Install the OnePlus Local Update APK. If it downloads as a .zip , rename it to .apk to install it. Open the installed Local Update app . Tap the gear icon in the top right corner.

Double-check that you downloaded the correct regional package for your specific Go to product viewer dialog for this item. model (e.g., LE2115 for NA).