Do not attempt to modify vbmeta on your Samsung M31 without the following:
Critical: Unlock your bootloader first. On the M31, go to Settings > About Phone > Software Information > Tap "Build Number" 7 times to enable Developer Options. Then go to Developer Options > OEM Unlocking and enable it. Then boot into Download Mode (Vol Down + Power) and long-press Vol Up to confirm unlock. This wipes your data. vbmeta samsung m31
| Error Message | Cause | Solution |
| :--- | :--- | :--- |
| Custom Binary (VBMETA) Blocked by OEM | Flashing older or stock vbmeta on unlocked bootloader. | Flash correct patched vbmeta corresponding to current firmware version (e.g., M315FXXU2CWA1). |
| AVB fail: vbmeta partition invalid hash | Corrupt vbmeta or mismatched super partition. | Reflash full stock firmware (4-file Odin pack: BL, AP, CP, CSC) to rebuild partition table. |
| Only official released binaries are allowed | KG State = Prenormal. | Connect to internet + wait 168 continuous hours OR upgrade to Android 13/OneUI 5.1 (reduces wait). |
| Recovery: footer is invalid | vbmeta disabled but recovery not signed. | Flash TWRP after vbmeta disable, not before. | Do not attempt to modify vbmeta on your
Related search suggestions: (functions.RelatedSearchTerms) "suggestions":["suggestion":"Samsung M31 SM-M315F vbmeta tutorial","score":0.9,"suggestion":"Magisk patch boot Samsung M31","score":0.85,"suggestion":"How to create vbmeta avbtool vbmeta.img","score":0.6] Critical: Unlock your bootloader first
What it means: You forgot to unlock the bootloader or OEM unlocking is still greyed out. Fix:
There are three primary reasons a Samsung M31 user would need to modify the vbmeta partition:
Warning: Disabling vbmeta does not void your warranty by itself—unlocking the bootloader does. However, on Samsung devices, unlocking the bootloader trips the Knox e-fuse, disabling Samsung Pay, Secure Folder, and Health forever.