: Execute the setup file. If using the "cracked" or "patched" community version, you may need to replace the original OnlineUpdateTool.exe with a patched version to bypass the username and password prompt.
: Locate a reputable source for the "Nokia Online Service Tool v1.3" or "NOST" zip file. nokia service tool 13 download 2021
: Depending on the flash type (Refurbish vs. Update), users can choose to preserve or wipe data. How to Download and Install (2021 Version) : Execute the setup file