This report details an issue encountered while attempting to use Magisk to modify the boot.img file on a Google Pixel 6a running Android 16 (BP22.250221.013). Despite successful patching of the boot.img using Magisk 28.1 and subsequent flashing through fastboot, the device failed to boot properly, resulting in the Android Recovery screen.
The issue was resolved by reflashing the original, unpatched boot.img. The data and files remained intact throughout this process.
Here's a step-by-step breakdown of the steps taken and the observed results:
**Steps to Reproduce:**
1. Download the Android 16 BP22.250221.013 factory image from the official website: [https://developer.android.com/about/versions/16/download](https://developer.android.com/about/versions/16/download), verifying its hash against the official source.
2. Decompress the downloaded image file using 7-zip. (Confirmed successful decompression.)
3. Transfer the downloaded boot.img file to the Pixel 6a using Google Quick Share.
4. Patch the boot.img using Magisk 28.1.
5. Transfer the patched boot.img back to the computer using Google Quick Share.
6. Using the latest ADB version (as of 2025.3.30), confirm device connection and reboot into the bootloader by running `adb reboot bootloader`.
7. Flash the patched boot.img using `fastboot flash boot PATH_TO_MY_BOOT.IMG`
8. Reboot the device using `fastboot reboot`
9. Observe the Android Recovery screen; the system fails to boot.
**Expected Results:** The patched boot.img should enable the device to boot successfully into the Android system.
**Actual Results:** The device displays the Android Recovery screen, preventing access to the system.
**Device Information:**
* Device Model: Google Pixel 6a
* Android Version: Android 16 BP22.250221.013
* Magisk Version Name: 28.1
* Magisk Version Code: 28100
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