If the above steps don't resolve the issue, you may need to try some advanced troubleshooting steps:

Multiple versions of VCOM or MTK drivers fighting for control.

Use the MTK USB Driver and ensure you have libusb-win32 installed if using a bypass utility. You may need to use the "Filter Wizard" in libusb to specifically target the MTK port while the device is in BROM mode. Hardware Handshake Failure

or similar utilities fail to communicate with a MediaTek-powered smartphone

Using a version of SP Flash Tool that doesn't support the device's chipset or using mismatched firmware files.

Try connecting while holding specific button combinations, such as Volume Down , or both simultaneously to force BROM mode. Software Adjustments Run the flashing tool as an Administrator