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Monitor the progress bar. Do not touch the cable or disconnect the device during this process. Once the firmware installation finishes, the software will display a "Flashing Successful" message, and the Nokia 6300 will automatically reboot into normal mode. Troubleshooting Common Flashing Errors -FULL- Nokia 6300 Rm 217 V 7.30 Flash File Free Download
You likely need a (hardware) or a USB 2.0 hub . Modern USB 3.x ports don’t provide correct voltage for BB5 flash mode. Use an old laptop or a powered USB hub. -FULL- Nokia 6300 Rm 217 V 7.30 Flash File Free Download