: Once connected via USB, the tool automatically detects the phone model and provides the necessary recovery steps.

Nokia Software Recovery Tool (NSRT) 6.2.55 is a Windows application designed to restore Nokia/X-series feature phones and some Symbian/Windows Phone devices to factory firmware and repair software-related faults (boot loops, failed updates, corrupted OS). The tool detects connected devices via USB and downloads official firmware packages from Nokia/partner servers to reflash devices.

The tool will begin downloading the firmware package. Do not disconnect the phone during this phase. Once the download finishes, the installation starts automatically. Your phone screen may go blank or show a "Nokia" logo during this time.