For most users, Maui META 3G or SP Flash Tool + SN Writer are safer alternatives. Only use v51 if older tools fail.
: Do not use the V51 Samsung force functions on: Devices with KG Locked/Active status. Devices with sec CTRL status (0) . Tracfone (DL TFN) carrier models. mtk meta utility v51
: For the tool to recognize devices in META or BootROM mode, you must have the correct MediaTek USB VCOM drivers installed on your PC. How to Use MTK META Utility For most users, Maui META 3G or SP
This is the most critical feature. Modern MTK phones (Vivo, Oppo, Xiaomi) have "Auth" (Authentication) security that blocks tools from flashing or wiping data unless you log in with a manufacturer account. For most users