Power off the device. Open the MTK Auth Bypass Tool and click the "Bypass" button.
Once the tool displays "Protection Disabled," you can then open your flashing software (like SP Flash Tool) to proceed with repairs. Risks and Safety MTKAuthBypassTool31 Power off the device
Connect the device to the PC via USB while holding the volume buttons (typically Volume Up + Down) to trigger the MediaTek USB Port (VCOM). MT6771 and newer variants.
Broad compatibility including older MT6735, MT6761, MT6771 and newer variants. Power off the device