(Note: this erases all data). Getting the right stock firmware for your M31. Flashing TWRP after the vbmeta patch.
The vbmeta.img file contains RSA public keys and digital signatures for essential system partitions like /system , /vendor , and /boot . During the boot process, the bootloader reads the vbmeta partition to verify that none of these system files have been altered or tampered with. The Conflict with Rooting and Custom ROMs
The moment the screen goes black, immediately switch your fingers to hold the keys.
Flashing system partitions carries inherent risks. Ensure you have fulfilled these prerequisites to prevent permanent damage to your Samsung M31: vbmeta samsung m31
Remember, the key to success is patience and precision. Always back up your data, use the correct files for your exact firmware, and never allow the phone to boot normally after flashing a modified image. With these precautions in mind, you're well on your way to taking full control of your Galaxy M31.
To help you move forward, are you looking to flash a (like LineageOS or Pixel Experience), or are you trying to achieve Magisk Root on your Samsung M31? Share public link
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Samsung Galaxy M31: Understanding and Patching VBMeta for Rooting
Boot back into Download Mode, flash the vbmeta.tar file again, and immediately boot into your recovery to perform a Format Data (typing "yes" in TWRP) to clear out system encryption.
Boot the phone back into Android, complete the setup wizard, connect to the internet, and verify in Developer Options that OEM Unlocking is still active and greyed out. The vbmeta
The bootloader detects this mismatch, panics, and prevents the phone from booting to protect you from malware.
You cannot flash custom files if your bootloader is locked. Go to Settings > Developer Options , enable OEM Unlocking , restart into download mode, and follow the on-screen prompts to unlock it.
Download the latest stable version of Odin (v3.14.4 or newer is recommended for Android 10/11/12).
Use a tool like 7-Zip to compress vbmeta.img into a .tar archive format (tar archives are required for Odin compatibility).