Title: How to Roll Back from Android Q Beta to Android 9 Pie on OnePlus 6 and 6T---Are you looking to revert to the familiar Android 9 Pie experience on your OnePlus 6 or 6T after trying out the Android Q Beta? This guide will walk you through the necessary steps to safely roll back your software and enjoy the stability of Android 9 Pie again.---## Rolling Back to Android 9 Pie from Android Q Beta on OnePlus 6 and 6TIf you've been experimenting with the Android Q Beta on your OnePlus 6 or 6T and are now ready to switch back to Android 9 Pie, follow these steps carefully:1. **Backup Your Data**: Before proceeding, ensure that all your important data—such as photos, contacts, and messages—is backed up. You can use OnePlus Cloud, Google Drive, or any other preferred method to back up your data.2. **Heads Up!**: Make sure that your phone is fully charged or has at least 50% battery life, as the rollback process might consume a lot of power.3. **Obtain the Download Link**: Obtain the Android 9 Pie firmware file specifically for your OnePlus 6 or 6T from the OnePlus Support page or a reliable source. The download link will be required during the rollback process.4. **Enable USB Debugging**: To access the software update, you'll need to enable USB debugging. Go to your phone's Settings, navigate to 'System,' select 'About Phone,' and tap on 'Build number' multiple times until you see a message that you are now a developer. Now, go back to the Settings menu, scroll down, and enable USB debugging under the ' Developer options.'5. **Use a Computer**: The rollback process should be done on a computer. Make sure it's fully charged and that your computer is connected to a stable internet connection.6. **Download the rollback tool**: Find the appropriate rollback tool from the OnePlus Support page. Follow the instructions to download and install the tool on your computer.7. **Connect Your Phone**: Turn off your OnePlus 6 or 6T, then boot into the firmware update mode. This is typically done by pressing and holding the Volume Down button and either the Power or Volume Up button simultaneously until your phone displays the Android figure.8. **Run the Rollback Tool**: Once your OnePlus 6 or 6T is in update mode, connect it to your computer using a USB cable. The rollback tool should automatically recognize your device.9. **Select Firmware File**: Navigate through the rollback tool to select the downloaded Android 9 Pie firmware file for your OnePlus 6 or 6T.10. **Begin the Rollback Process**: Click the start button in the rollback tool to begin the installation process. The device will restart, and the installation of Android 9 Pie will begin.11. **Finalize the Rollback**: The installation should complete without any issues. Once it's done, the phone will restart, and your OnePlus 6 or 6T should now be running Android 9 Pie.---Please note that rolling back the software version may void any warranty or service commitments. Always consult the official OnePlus support for the most accurate and up-to-date instructions before attempting to change software versions.