Inspect vbmeta:
avbtool verify_image --image vbmeta.img
Create a vbmeta that allows verification errors (conceptual—options vary):
avbtool make_vbmeta_image --key pubkey.pem --algorithm SHA256_RSA2048 --include_descriptors ... --output vbmeta.img
(Exact flags depend on desired descriptors; consult avbtool docs.) vbmeta samsung m31
Each goal typically requires one or more of:
Even experienced users stumble. Here are the specific errors you’ll see on the Galaxy M31 and how to fix them. Inspect vbmeta: avbtool verify_image --image vbmeta
Create a tar archive:
tar -c --format=ustar -f vbmeta_patched.tar vbmeta.img
Boot M31 into Download Mode (Power + Volume Down + USB cable to PC). (Exact flags depend on desired descriptors; consult avbtool
Open Odin3:
Immediately after flash:
This process disables Android Verified Boot (AVB) on your device.
Samsung doesn't use fastboot, but you can use Heimdall (Linux/macOS):
heimdall flash --VBMETA vbmeta.img --no-reboot