Please go to the Support section of our website (http://www.netcomm.com.au/support) and download the latest firmware for your router.
There are step by step instructions for doing the update available on the firmware download page. Follow these instructions and after it has completed, perform a factory reset on your router. You can perform a factory reset by holding the reset button on the rear of the router down for 30 seconds.
You will then need to re-configure your router with your service specific settings (ISP username / password and wireless / VOIP settings if appropriate).
Are you able to update the firmware?