Hi Fraser. Thanks for the quick reply.
I was a Telstra customer for a number of years, so own the Telstra Smart Modem Gen 3 outright. I've recently signed up with another NBN provider but still want to continue using the Gen 3, to utilise DumaOS functionality; mainly QoS congestion control / bandwidth allocation etc, as have three teenagers who hog the network with their online gaming, streaming services, etc.
So I'm reluctant to factory reset the device unless I know it won't remove DumaOS (as I have no way of re-activating Internet Optimiser from the Telstra app, even though I'm still a customer for their other sevices).
Any advice on this one?