The vbmeta partition contains cryptographic hashes and digital signatures for all critical system partitions, including: /boot (Kernel) /recovery /system /vendor
You cannot flash custom files like a modified VBMeta if your bootloader is locked. Go to Developer Options , enable OEM Unlocking , power off your device, and hold the Volume Up + Volume Down keys while connecting it to a PC to enter the bootloader unlock menu. vbmeta samsung a12
Boot into your recovery menu, select Factory Data Reset / Format Data , type "yes" if prompted, and restart. You can use a universal disabled VBMeta file
You can use a universal disabled VBMeta file. It is a standard vbmeta.img file originally generated by Google's AVB tool with the flags --disable-verity and --disable-verification injected into it. Step 2: Convert to tar Format Odin only recognizes files packaged in .tar format. Right-click your disabled vbmeta.img . Use 7-Zip to "Add to archive". Change the archive format to and name it vbmeta.tar . Step 3: Flash via Odin Power off your Galaxy A12. Right-click your disabled vbmeta