Samsung S9 Boot.img [UPDATED]

On the S9, Samsung introduced (security) and AVB (Android Verified Boot 2.0) with dm-verity on the system partition, but boot.img itself is signed with a Samsung OEM key. 2. Location and extraction The boot.img is stored in the boot partition , not inside the super partition (system/vendor).

Check partitions on S9:

| Section | Description | |---------|-------------| | | Standard Android boot image header (size, kernel address, ramdisk address, etc.) | | Kernel | Image or zImage – the Linux kernel for Exynos 9810 | | Ramdisk | Gzipped CPIO archive with root filesystem used in early boot | | DTB (Device Tree Blob) | Hardware description for Exynos 9810 (sometimes separate in dtb.img ) | | Samsung Signature | Cryptographic signature (Samsung's signature_blob ) for verified boot | samsung s9 boot.img

dd if=/dev/block/by-name/boot of=/sdcard/boot.img On a rooted S9, you can pull it via adb pull /sdcard/boot.img . Use bootimg-tools or magiskboot (from Magisk) to unpack: On the S9, Samsung introduced (security) and AVB