Using tools like fastboot or a device-specific tool, extract your device's boot image.

If you don't patch the vbmeta region when installing Magisk, you may encounter issues with device boot or, worse, SafetyNet failures. SafetyNet is Google's mechanism for verifying the integrity of an Android device. If SafetyNet detects that a device has been tampered with (which could be incorrectly assumed if Magisk is installed without proper vbmeta patching), it can trigger various limitations, such as:

To boot successfully with a modified image, you often need to disable the Android Verified Boot (AVB) checks stored in Reboot to Fastboot : Connect your phone to your PC and run: adb reboot bootloader Flash the Patched Boot Image fastboot flash boot magisk_patched_[random_strings].img (Note: Use instead of if your device requires it) Flash VBMeta with Disable Flags

Warning: This method is device-specific and rarely necessary. For 99% of users, the separate vbmeta flash is safer.

When a user flashes a patched boot image via Magisk (either via the App's "Direct Install" or "Select and Patch a File"), the following operations occur:

partition detects the change and prevents the phone from starting.