To downgrade your to Android 11 (OxygenOS 11), you can follow two primary methods. Both methods will completely wipe all data
from your phone, so it is essential to perform a full backup before starting. OnePlus Community Method 1: Local Update (Official Rollback)
This is the standard way to downgrade if your phone is currently functional and running OxygenOS 12. OnePlus Community Download the Rollback Package
: You must download the correct firmware package for your specific region (IN, NA, or Europe) from the official OnePlus Community Install the Local Update APK
: OxygenOS 12 removed the "Local Upgrade" option from settings. You need to download and install the OPLocalUpdate_For_Android12.apk to restore this feature. Prepare the File : Move the downloaded rollback package (.zip) to the root directory of your phone's internal storage (not inside any folder). : Ensure the file extension is strictly . If it ends in , rename it to remove the Execute the Rollback
: Open the newly installed Local Update app, tap the gear icon, select your rollback package, and tap "Install Now". : Once finished, your phone will reboot into Android 11. Method 2: MSM Download Tool (Deep Rollback/Unbrick)
Use this if the local update fails or if your phone is bricked. This method uses the device's low-level EDL (Emergency Download) mode. How to Downgrade OnePlus OxygenOS via MSM Download Tool
To downgrade your OnePlus 9 to Android 11 (OxygenOS 11), you will need to perform a local upgrade using a specific rollback package. This process will wipe all data
on your device, so ensure you have a complete backup before starting. Prerequisites Rollback Firmware
: Download the Android 11 rollback package corresponding to your specific region (IN, NA, or Europe). Local Update APK
: Since modern OxygenOS versions (Android 12+) often hide the "Local Upgrade" option, you may need to install the OnePlus Local Update APK to enable it. File Renaming : If your downloaded files end in , you must rename them to end strictly in (for firmware) or (for the update tool) for the system to recognize them. Step-by-Step Downgrade Process Prepare the Package : Copy the downloaded Android 11 rollback file to the root directory of your phone's internal storage (not inside any folder). Install the Update Tool : Install the Local Update APK
you downloaded. You may need to enable "Install from Unknown Sources" in your security settings. Initiate Rollback Local Update
app (it may appear as a "System Update" icon in your app drawer). in the top right corner.
Select the Android 11 rollback package you placed in the root directory. Confirm and Install
: A warning will appear stating that this will erase all data. Confirm the installation. : Once the installation reaches 100%, tap
. Your device will boot into recovery, perform a factory reset, and then start up running OxygenOS 11. Troubleshooting & Tips Regional Errors
: If the tool rejects your file, verify that you downloaded the correct version for your model (e.g., LE2111 for India, LE2115 for North America).
: If your phone becomes unresponsive or "bricked," you may need to use the MSM Download Tool on a PC to force-flash the original firmware. Verification : After the first boot, go to Settings > About Phone to confirm you are on Android 11. for your region's rollback package? Oneplus 9 Pro | Downgrade to OXYGEN OS 11
To downgrade your Go to product viewer dialog for this item.
to Android 11 (OxygenOS 11), you must use a rollback package and a specific local update APK, as the standard system settings often hide the local upgrade option on newer Android versions. Critical Pre-Checks
Backup Everything: This process will completely wipe all data from your device. Battery: Ensure your phone is charged to at least 50%.
Carrier Restriction: If your device is a carrier-specific model (like T-Mobile), this standard rollback method may not work. Step-by-Step Downgrade Guide Download Necessary Files:
Rollback Package: Download the official Android 11 rollback ZIP specific to your region (Global, India, or EU) from the OnePlus Community forums. downgrade oneplus 9 to android 11 exclusive
Local Update APK: Download the "MyApplication2" or "OnePlus Local Update" APK. This tool allows you to manually select the rollback file. Prepare the Files:
If the rollback file ends in .jar, rename it to end in .zip.
Move the rollback ZIP to the root directory of your phone's internal storage (not inside any folder). Install the downloaded Local Update APK. Initiate the Rollback: Open the Local Update app you just installed. Tap the gear icon in the top-right corner. Select the Android 11 rollback ZIP package.
Confirm the warning that all data will be erased and click Install. Finalize the Process: Wait for the installation to reach 100%.
Tap Reboot. Your phone will restart, perform a factory reset, and boot into OxygenOS 11.
Once you've reached the Android 11 setup screen, you can check for minor OTA updates in Settings > System > System Updates to get the latest stable version of OxygenOS 11.
Downgrading OnePlus 9 to Android 11: A Step-by-Step Guide
The OnePlus 9 series was launched with Android 11 out of the box, and since then, it has received several updates, including Android 12. However, some users may want to downgrade their device to Android 11, either to revert back to a more familiar interface or to fix issues with the newer version. In this feature, we'll explore the process of downgrading a OnePlus 9 device to Android 11.
Why Downgrade to Android 11?
There are several reasons why a user might want to downgrade their OnePlus 9 device to Android 11:
Preparation is Key
Before downgrading your OnePlus 9 device to Android 11, make sure to:
Downgrade Process
To downgrade your OnePlus 9 device to Android 11, follow these steps:
adb devices to verify that your device is detected.adb reboot bootloader to reboot your device to fastboot mode.fastboot flash --slot=a firmware.zip (replace "firmware.zip" with the actual file name) to flash the Android 11 firmware.fastboot erase userdata to wipe your data.fastboot reboot to reboot your device.Post-Downgrade Steps
After downgrading your OnePlus 9 device to Android 11:
Conclusion
Downgrading a OnePlus 9 device to Android 11 is a relatively straightforward process, but it does come with some risks, including data loss and potential issues with future updates. Before attempting to downgrade, make sure to backup your data and understand the risks involved. Additionally, keep in mind that downgrading may void your warranty, and you may not receive future updates or security patches.
Exclusive: What to Expect from Android 11 on OnePlus 9
Android 11 on the OnePlus 9 offers a range of features, including:
By downgrading to Android 11, users can experience these features on their OnePlus 9 device. However, it's essential to weigh the benefits against the potential risks and consider whether downgrading is the right decision for you.
To downgrade your Android 11 (OxygenOS 11) , you must use a rollback package. This process will wipe all your data , so ensure you have a full backup before proceeding. 1. Preparation Backup Your Data To downgrade your to Android 11 (OxygenOS 11),
: Move photos, videos, and documents to a computer or cloud storage. Charge Your Device : Ensure your phone has at least 30%–50% battery to prevent it from shutting down during the process. Enable Developer Options Settings > About Device > Version and tap on Build Number seven times until "Developer mode" is active. 2. Download the Files You need two specific files: the Rollback Firmware Local Update APK
(required because newer Android versions often hide the local update option). Rollback Packages
: Obtain the correct package for your region (IN, NA, or Europe) from the official OnePlus Community forums Local Update Tool : Download the Official OnePlus Local Update APK 3. Setup the Files Rename the Local Update APK : If the tool downloads as a , rename it to end in and install it on your phone. Rename the Firmware : If your rollback package ends in , rename it to end in : Move the renamed firmware file to the Root Directory
of your internal storage (the main folder, not inside any specific folder like "Downloads"). 4. Execute the Downgrade Local Update app you just installed. (settings) in the top right corner. Select the rollback package you moved to your root directory. A warning will appear stating that this will factory reset your device. Confirm the installation. Wait for the progress bar to reach 100%, then tap Troubleshooting: MSM Download Tool
If your device becomes unresponsive or the local update method fails, you can use the MSM Download Tool on a Windows PC.
Download the MSM tool specific to your OnePlus 9 variant from XDA-Developers Power off your phone, hold Volume Up + Volume Down , and connect it to your PC to enter
The tool will detect the device as "Qualcomm HS-USB QDLoader 9008" and flash the factory Android 11 image. Oneplus 9 Pro | Downgrade to OXYGEN OS 11
Downgrading your from Android 12 (OxygenOS 12) back to Android 11 (OxygenOS 11)
is a popular choice for users who prefer the original OnePlus software identity before the "ColorOS-ification" merge. 🌟 Review: Why Downgrade?
The "exclusive" Android 11 experience is often cited as superior for several reasons: Aesthetic Identity:
OxygenOS 11 maintains the "classic" OnePlus look, whereas Android 12 adopts Oppo’s ColorOS design. Stability: Users report significantly fewer bugs and smoother performance on Android 11. Customization:
Android 11 offers more granular control over individual app icons and status bar personalization, features that were removed or restricted in later versions. Battery Life:
Many users found that Android 12 led to excessive battery drain (SOT as low as 2.5 hours), which was often resolved by rolling back.
The camera UI in Android 11 is preferred by some for its Hasselblad-tuned natural color science, which changed in the ColorOS-based update. ⚠️ Critical Warnings Data Loss: This process wipes all data on your phone.
You will lose access to the latest Android security patches.
While generally safe if followed correctly, any manual flashing carries a small risk of bricking the device. Oneplus 9 Pro | Downgrade to OXYGEN OS 11
To downgrade your to Android 11 (OxygenOS 11), you must follow a specific rollback procedure. This process is necessary because standard system update settings often lack a direct "downgrade" button.
Critical Warning: This process will completely and irreversibly wipe all data on your phone. Ensure you have a full backup stored on a PC or cloud service before proceeding. Phase 1: Preparation Check Battery: Ensure your device has at least 50% charge. Download Required Files:
Rollback Package: Download the specific Android 11 rollback ZIP for your model (OnePlus 9 or 9 Pro) and region (Global, India, or Europe) from official OnePlus Community threads.
Local Update APK: Since OxygenOS 12 and 13 often hide the local upgrade option, you may need a dedicated Local Update APK to facilitate the flash. Prepare Files:
If the rollback file ends in .jar, rename it to remove the .jar extension so it ends in .zip.
Move the rollback .zip file to the root directory of your phone's internal storage (do not put it in any folder). Phase 2: Execution (Local Upgrade Method) This is the standard official method for a working device. Bugs and issues : Some users may be
Enable Developer Options: Go to Settings > About Device > Version and tap Build Number 7 times.
Install the Tool: Install and open the Local Update APK you downloaded. Select the Firmware: Tap the gear icon (settings) in the top-right corner.
Find and select the Android 11 rollback .zip file you placed in the root directory.
Confirm and Install: A warning will appear stating that all data will be wiped. Confirm and tap Install.
Reboot: Once the installation reaches 100%, tap Reboot. The device will boot into recovery, perform a factory reset, and then start up with OxygenOS 11. Phase 3: Alternative Method (MSM Download Tool)
If your device is bricked or the local upgrade fails, use the MSM Download Tool. This is a powerful PC-based utility that flashes the phone in EDL (Emergency Download) Mode. How to Unbrick OnePlus 9/9 Pro/9R via MSM Download Tool
The story of the OnePlus 9’s journey back to Android 11 is one of community-driven persistence against a shifting software identity . When the device launched, it was celebrated for OxygenOS 11
, which many users felt represented the peak of OnePlus's "Fast and Smooth" philosophy. However, the subsequent update to Android 12 (OxygenOS 12) introduced a merger with ColorOS, bringing UI inconsistencies, bugs, and a loss of the unique OnePlus feel that many found disruptive.
Because the official system update menu often lacks a direct rollback option, users have had to rely on a specific set of tools and community-sourced workarounds to reclaim their Android 11 experience. The Path Back to Android 11
Downgrading is a precise process that requires specific "Rollback Packages" tailored to your device's region (IN, NA, or EU). Preparation and Data Backup
: The most critical step is acknowledging that a downgrade will completely wipe all data
from the phone. Users are advised to use services like Google Photos or the OnePlus Switch app to secure their files before starting. The Local Update Tool
: Since Android 12 and 13 often hide the local upgrade option, you must download a specific Local Update APK
. This app restores the gear icon in your update settings, allowing you to manually select a firmware file. Renaming Files
: A common technical hurdle involves file extensions; some downloaders add a
to the end of the APK or firmware. You must rename these files to end strictly in (for the tool) or (for the firmware) for them to be recognized. Executing the Rollback : Once the firmware package is placed in the main page of internal storage
(not in any folder), you use the Local Update app to select it. The phone will verify the package, warn you about the factory reset, and then begin a 10-12 minute installation process. The Final Recovery
: After completion, the device reboots into recovery mode to perform a factory reset. After about 4 to 5 minutes of initial booting, the familiar Android 11 setup screen returns. Advanced Solutions for "Bricked" Devices
In cases where the software fails entirely, the community relies on the MSM Download Tool
. This tool works even if the phone is unresponsive by forcing it into EDL (Emergency Download) Mode
(holding both volume buttons while plugging into a PC) to re-flash the stock Android 11 firmware directly to the hardware partitions. [CLOSED] Roll back - OnePlus Community
I understand you're looking for a feature related to downgrading the OnePlus 9 from Android 12/13/14 back to Android 11 (often called the “downgrade to OOS 11” process). This is a popular request because many users feel OxygenOS 11 was more stable, had better battery life, and fewer bugs than later versions.
Below is a concise, useful feature guide for performing the downgrade safely — with key warnings, steps, and tools.
Sign up now to enjoy all premium channels and features for 24 hours with no restrictions. See what makes us the top-rated IPTV provider.