I've recently bought an XGZ030 XGSPON modem, for love nor money I can't get it to work and pass a wan ip to a router.

The lights show it's registering with the OLT, and the gui says the light level is good but it never passes any traffic.

I've managed to find a wan menu that's hidden and gives the option for bridge mode and cloning the MAC address of my providers ont but when I enter the settings and save them it just clears the settings and saves nothing.

The latest firmware is a year old and wondered if anyone had any suggestions.