I was here to say exactly the same thing but about another insulin pump system.

A few months ago, an update to Roche's DiabetLoop (DBLG1) created a thousand problems with emails recommending temporary tricks, subsequent updates, etc.

It’s unclear how such a serious issue didn’t surface during QA testing for a system that is, ultimately, fully under the control of the manufacturer (hardware/software).

I see a lot of effort to ensure the ecosystem is increasingly closed, touting the need for security of devices that can be fatal, but, in reality, there's little attention given. (And I say this because bugs and issues that everyone reports are always present, they're known, and they’re not being addressed.)