Downgrade Oneplus 9 To Android 11 Exclusive Jun 2026

: This happens if you downloaded the wrong regional firmware (e.g., trying to flash an Indian firmware package onto a European LE2113 device). Verify your model number and download the correct package.

To check your model:

A warning prompt will remind you that this action erases all data. Confirm and select .

Downgrading is an advanced procedure. If you are not comfortable using command‑line tools or manipulating system files, consider seeking help from a professional or an experienced friend.

Move the downloaded ZIP file to the of your phone’s internal storage. This means the file should not be inside any folder. downgrade oneplus 9 to android 11 exclusive

Are you doing this from a ?

In fact, the problems were so widespread that one OnePlus community user said, “I have to say, nothing improved, no bugs were fixed — battery drain after 40% — random app crashes — screen freeze — keyboards lag over time — 60 hz usage of the phone is unusable — black out screens — nothing improved from the first 12 upgrade”.

To downgrade your OnePlus 9 to Android 11, you'll need to follow these steps:

If your browser saves this file as LocalUpdate.zip , you must use a file manager application to rename it to LocalUpdate.apk by removing the .zip suffix. 2. Official Android 11 Rollback Firmware : This happens if you downloaded the wrong

Charge your OnePlus 9 to at least to prevent sudden shutdowns.

Connect to Wi-Fi, log in to your Google Account, and use the Clone Phone app or your external storage backup to restore your data, applications, and settings back onto the device. Troubleshooting Common Issues

: Ensure your device is charged to at least 30% (though 60% is safer) to prevent a shutdown during flashing.

Connect your OnePlus 9 to your computer and transfer the downloaded rollback .zip file directly to the Internal Storage root directory (do not put it inside any folder like Download or Documents). Confirm and select

For many OnePlus 9 owners, returning to Android 11 brings back a snappier, more reliable experience. The phone’s original software was refined over months, and for some users, it simply works better than the newer Android 12 or 13 builds.

Once the installation finishes, tap . The first boot into Android 11 can take up to 10 minutes.

Many users find that later versions of OxygenOS introduced "bloat" or UI changes that felt foreign to the brand's identity. Key reasons to consider the rollback include:

Reports suggest better call quality, specifically regarding VoLTE and VoWiFi stability, on the older firmware. ⚠️ Pre-Rollback Checklist Oneplus 9 Pro | Downgrade to OXYGEN OS 11