Must I have an AT&T SIM?

Hello!

So I purchased, a while ago, a 'unbranded' and unlocked Priv, which turned out to be AT&T branded. I'm realising now that I probably won't get updates unless I am on their network.

How can I go around this? I am in Australia, and obviously will never have access to their network.

Thanks for any help you can give!

Hi that's problem already solve now you can get updates directly from BlackBerry

Really? Because I have a June security patch, and it says that's the latest.