Hey @williamivers, thanks for reaching out. Just going off your the details in your message, it does appear to be a scam - unless your NBN modem has been damaged the models that are/ have been available shouldn't need an update for awile.
We would be more than happy to take a look into your services and advise further. Please send through your service details over to our 24/7 Messenger Teams on the Optus App and we will follow up with you
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