If the tool gets stuck on "Waiting for device," change your USB cable, try a different USB port (preferably a USB 2.0 port on the back of the PC), or reinstall the MTK VCOM drivers.
A tested, original firmware file specific to the model. nokia ta1235 flash file infinity best hot
—the core operating system firmware designed to overwrite the corrupted code causing the hang. If the tool gets stuck on "Waiting for