Modern Android devices use to ensure partition integrity. The vbmeta.img contains cryptographic hashes for other partitions like boot , system , and vendor . When you patch your boot.img with Magisk, its hash changes. If the original vbmeta still expects the stock hash, the bootloader will reject the modified boot image and prevent the device from starting. Core Methods for Patching
To operate, Magisk patches the verified boot flags within the image headers, effectively disabling the verification checks that would detect the modifications made to the ramdisk. patch vbmeta in boot image magisk