Step One: Un-Plug the SonicWall
Step Two: Press and hold the Reset Switch and then Re-Plug the SonicWALL.
Step Three: Once the Test LED starts to flash, let go of the Reset Switch.
Step Four: The Test LED flashes for approximately 90 seconds while the firmware is erased. After
completing the diagnostic sequence, the Test LED stays lit, indicating that the firmware has
been erased. It is normal for the Test LED to stay lit after erasing the firmware. It does not go
off until the firmware is re-installed