: Power off your Nokia phone and connect it to your PC while holding the Volume Down button to enter Download Mode (Fastboot). Supported Devices
: Locate a reputable source for the "Nokia Online Service Tool v1.3" or "NOST" zip file. nokia service tool 13 download 2021
: Ensure your firmware version matches your specific model (e.g., TA-1004). Installing the wrong firmware can result in a permanent "hard brick." : Power off your Nokia phone and connect