Samsung M31 | Vbmeta

The vbmeta partition is critical to Android’s Verified Boot (AVB) process. On the Samsung Galaxy M31, this partition determines whether the device boots normally, enters a recovery state, or displays a "Custom Binary Blocked" warning. Modifying (flashing) or disabling vbmeta is the primary prerequisite for rooting, installing custom ROMs (like LineageOS), or flashing patched firmware images.

: The original vbmeta.img.lz4 file is found within the BL (Bootloader) or AP (System) file of a stock Samsung firmware package. Patching/Disabling : vbmeta samsung m31

Right-click the AP file and use 7-Zip to "Extract files...". Inside the extracted folder, find vbmeta.img.lz4 . Extract the .lz4 file again to get the raw vbmeta.img . 3. "Preparing the Paper" (Creating the Tar Archive) The vbmeta partition is critical to Android’s Verified