Click the or CP slot (some guides suggest BL , but for a standalone VBMeta, many users find success using the USERDATA slot to avoid signature conflicts). Select your vbmeta.tar file.
Once Odin says "PASS," your phone won't reboot. You must manually force it into Recovery Mode (Power + Volume Up) and perform a . This is mandatory because the encryption will be tripped by the new VBMeta. Troubleshooting Common A12 VBMeta Issues vbmeta samsung a12 best
The consensus among developers on XDA Forums is that the is the one you patch yourself from your own stock firmware. But if you cannot, the pre-patched versions from trusted sources are the next best thing. Click the or CP slot (some guides suggest
Some custom recovery developers for the A12 bake the VBMeta disable command directly into the recovery flashable zip. You must manually force it into Recovery Mode