This article details a problem encountered while patching the boot.img file of a Google Pixel 6a using Magisk. After patching and flashing the modified boot.img, the device failed to boot into the Android system, displaying the Android Recovery interface. This issue was resolved by re-flashing the original, unpatched boot.img.

**Steps to Reproduce:**

1. Download the Android 16 BP22.250221.013 factory image from the official Google developer website (https://developer.android.com/about/versions/16/download). Verify the hash matches the official source.
2. Decrypt the downloaded factory image using 7-zip.
3. Transfer the extracted boot.img file to the Pixel 6a using Google Quick Share. Note: This step was successful with another boot.img patch previously.
4. Patch the boot.img file using the latest version (28.1) of Magisk.
5. Transfer the patched boot.img back to the computer.
6. Use the latest version of ADB (as of 2025.3.30) and confirm the device connection.
7. Reboot the device into the bootloader using `adb reboot bootloader`.
8. Flash the patched boot.img using `fastboot flash boot PATH_TO_MY_BOOT.IMG`.
9. Reboot the device using `fastboot reboot`.
10. After reboot, the device displays the Android Recovery interface.

Device Details:

- Device: Google Pixel 6a
- Android Version: Android 16 BP22.250221.013
- Magisk Version Name: 28.1
- Magisk Version Code: 28100

**Resolution:**
To resolve the issue, the original, unpatched boot.img file was re-flashed. This allowed the device to boot into the Android system normally.

**Note:** This issue may be specific to the particular Magisk version and Android build used. Further investigation is required to determine the root cause and potential solutions.

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