This guide explains how to downgrade from Android 12 to Android 11 without data loss. Two methods are detailed. Remember to back up your data before proceeding, as downgrading can erase all existing information.

Method 1: Leaving the Android 12 Beta Program

This method is only suitable if you installed Android 12 through the beta program.

1. Access the Android Beta Program website.
2. Log in with the Google account linked to your Android 12 device.
3. Locate your device and select "Opt out" or a similar option.
4. Confirm your decision to leave the beta program. The device will then revert to Android 11.

Method 2: Flashing the Android 11 Factory Image (More Advanced)

This method requires more technical expertise and involves flashing a factory image. Proceed with caution.

Step 1: Download Necessary Files

1. Download the appropriate Android SDK Platform Tools for your operating system. Extract the contents.
2. Download the Android 11 factory image for your specific Pixel device model (found in your phone's Settings > About phone). Extract this as well.
3. Place the extracted Android 11 image files into the SDK Platform Tools folder.

Step 2: Enable Developer Options and USB Debugging

1. Go to Settings > About phone on your device.
2. Tap "Build number" seven times to enable developer options.
3. Go to Settings > System > Developer options.
4. Enable "OEM unlocking" and "USB debugging".

Step 3: Unlock the Bootloader

1. Connect your phone to your computer.
2. Open the SDK Platform Tools folder, type cmd in the address bar, and press Enter.
3. In the command prompt, type adb reboot bootloader and press Enter.
4. Type fastboot flashing unlock and press Enter.
5. Follow the on-screen instructions on your phone to unlock the bootloader.

Step 4: Flash the Android 11 Factory Image

1. With your phone in fastboot mode, type flash-all in the command prompt and press Enter. This will begin the downgrade process.

Step 5: Relock the Bootloader (Important)

1. Once the flashing is complete, enable USB debugging again.
2. Connect your phone to your computer.
3. Open the command prompt in the SDK Platform Tools folder.
4. Type adb reboot bootloader and press Enter.
5. Type fastboot flashing lock and press Enter.
6. Confirm the bootloader lock on your phone. Your device will reboot into Android 11.

Conclusion:

Choose the method that best suits your technical skills. Method 2 is considerably more complex and carries a higher risk of bricking your device if not followed precisely. Always back up your data before attempting either method.

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