Vbmeta Samsung | M31

Samsung implements a stricter version of this security (often called Knox Guard). On the M31, the vbmeta partition does the following:

Samsung's Odin tool cannot flash raw .img files; they must be wrapped in a .tar container. vbmeta samsung m31

If you own a (SM-M315F) and have ventured into the world of custom ROMs, rooting, or even just installing a standard OTA update, you have likely encountered the cryptic term "vbmeta." For many users, a vbmeta error is the dreaded red warning that stops modifications dead in their tracks. Samsung implements a stricter version of this security

If you try to install a Custom ROM or Root your M31, the hashes won't match. vbmeta samsung m31

Samsung Galaxy M31: Understanding and Patching VBMeta for Rooting