Android 13 removes the native "Local Upgrade" option from the system update menu. To bypass this, you must use an official OnePlus APK tool.
This guide provides a comprehensive walkthrough for rolling back your OnePlus 9 to Android 11. ⚠️ Crucial Warnings Before Proceeding
Users report that Android 11 feels "so damn good" compared to the stuttery, sluggish behavior often found in early OxygenOS 12 builds. Classic UI:
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: Downgrade Oneplus 9 To Android 11
"Enough," he muttered.
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Once the OnePlus logo appears, release the keys to enter . Select your preferred language. Android 13 removes the native "Local Upgrade" option
The System Update App Says "Verification Failed" or "File Incompatible" This typically happens for two reasons:
: Tap the gear icon (top right) and select the rollback package you moved to the root directory.
Ensure you download the EU zip file to avoid network compatibility issues. ⚠️ Crucial Warnings Before Proceeding Users report that
user wants a comprehensive article on downgrading a OnePlus 9 to Android 11. I need to follow the search plan outlined in the instructions. The plan has multiple rounds. I'll start with Round One, conducting all the searches as specified. search results for Round One provide a good starting point. I have found several potential sources for rollback packages, guides, and discussions about the process. For the next round, I need to dig deeper into specific aspects mentioned in the plan. I will search for more detailed guides, potential issues, and community discussions. search results in the second round have provided more specific information. I have found details on rollback packages, the Local Upgrade method, potential issues, and MSM tool guides. Now, for the third round, I need to look for additional resources that might offer more comprehensive guides or alternative methods. that I have gathered a substantial amount of information, I will proceed to write the article. The article will cover the reasons for downgrading, the prerequisites, the step-by-step methods (Local Upgrade, Rollback APK, MSM Tool), troubleshooting common errors, and a conclusion. I will cite the relevant sources throughout the article.ngrading a smartphone's operating system isn't a casual step, but sometimes it's a necessary one. If your OnePlus 9 feels sluggish, has bugs, or you simply prefer the experience of the earlier software, moving back to Android 11 (OxygenOS 11) can be a great way to restore stability and performance.
A severe warning prompt will appear on your screen, explicitly stating that this installation will wipe all data on your device. Confirm your choice by tapping or Confirm .
If your phone spins on the boot logo for more than 15 minutes, turn off the device. Hold the Power + Volume Down buttons to enter Recovery Mode. Select your language, tap Wipe Data and Cache , select Erase Everything , and reboot. Conclusion
