To use MTK Sec Bypass V12 or similar versions like V7, you need a specific environment on your PC:
Without disconnecting the device, you can now use tools like SP Flash Tool in UART Connection mode to flash firmware or perform repairs. Important Safety and Legal Notice Mtk Sec Bypass V12
Hold the Volume Up (or Volume Down, depending on the model) button while connecting the phone to the PC via USB. To use MTK Sec Bypass V12 or similar
Low-level flashing carries a risk of permanently damaging your device. Always back up data if possible. Mtk Sec Bypass V12
Follow these general steps to disable protection on your device: