Recent security updates (specifically Binary 3 and later) have made the A12 notoriously difficult to root. Many users find that even with a "perfect" patched vbmeta, their device still loops if the firmware version doesn't match perfectly or if they haven't disabled "dm-verity".
For the is a "disabled" version flashed alongside your custom recovery. It provides the most freedom to experiment with different ROMs without the constant fear of a "Verification Failed" screen. vbmeta samsung a12 best
Here is everything you need to know about finding and flashing the for your Samsung A12. What is VBMeta and Why Does the A12 Need It? Recent security updates (specifically Binary 3 and later)
To successfully prepare and flash vbmeta on your A12, follow these steps: Obtain Stock Firmware It provides the most freedom to experiment with
Use the vbmeta-disable-verification tool on GitHub to manually modify the image before flashing. ⚠️ Critical Compatibility Notes