How? The device phones home to the manufacturer's servers to get new updates. Manufacturer goes out of business, servers get shut down. How does it know where to get updates now?
> Manufacturer goes out of business, servers get shut down.
Continue your chain of reasoning: DNS name becomes unmaintained, gets grabbed by open source / foundation / gov agency, pushes open source firmware update.
> Manufacturer goes out of business, servers get shut down.
Continue your chain of reasoning: DNS name becomes unmaintained, gets grabbed by open source / foundation / gov agency, pushes open source firmware update.
Same thing happens today with botnet C&C servers.