Downgrade Oneplus 9 To Android 11 Exclusive 'link' Jun 2026
Download and install the official . Grant the app storage permissions when prompted. Step 3: Flash the Android 11 Rollback Package
: Sometimes downloads append extra characters (like .jar or .zip.j ). If the firmware ends in .jar , rename it to end exactly in .zip . If the APK ends in .zip , rename it to .apk .
If the local upgrade fails, or if you want to ensure a 100% clean slate, the MSM Tool is the industry standard. This is a low-level flashing tool used by OnePlus service centers. downgrade oneplus 9 to android 11 exclusive
Tap the or the Three Dots in the top-right corner. Select Local Upgrade .
Before you touch a single file, understand these three non-negotiables: Download and install the official
fastboot flash aop_a aop.img fastboot flash aop_b aop.img fastboot flash bluetooth_a bluetooth.img fastboot flash bluetooth_b bluetooth.img fastboot flash boot_a boot.img fastboot flash boot_b boot.img fastboot flash dtbo_a dtbo.img fastboot flash dtbo_b dtbo.img fastboot flash modem_a modem.img fastboot flash modem_b modem.img # Critical: Flash system as raw (not super) fastboot flash system_a system.img fastboot flash system_b system.img fastboot flash vbmeta_a vbmeta.img fastboot flash vbmeta_b vbmeta.img fastboot flash vendor_a vendor.img fastboot flash vendor_b vendor.img
Go to Settings > About Device > Version and tap Build Number 7 times. If the firmware ends in
fastboot delete-logical-partition system_a fastboot delete-logical-partition system_b fastboot delete-logical-partition product_a fastboot delete-logical-partition product_b fastboot delete-logical-partition vendor_a fastboot delete-logical-partition vendor_b
(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
The path to downgrade your OnePlus 9 to Android 11 is not for the faint of heart, but using the MSM tool or the hidden local upgrade APK, you can restore the flagship killer experience. Keep this guide bookmarked, as OnePlus continues to purge old rollback files from the internet.
Before diving into the “how,” it’s worth understanding why many OnePlus 9 owners choose to revert to Android 11. When OnePlus began rolling out the Android 12 update (OxygenOS 12), a significant number of users reported performance issues, battery drain, and connectivity problems. In some cases, early beta releases even bricked devices outright, forcing OnePlus to pull the download links. For those who value stability and smooth performance, Android 11 remains a well‑optimised and reliable foundation for the OnePlus 9.