A Coburg family spent the better part of Tuesday morning without hot water for tea, after their smart kettle entered an unannounced firmware update mid-cycle and refused all further instructions until it had finished "optimising."

The kettle, a Wi-Fi-connected model purchased eight months ago to allow boiling to be initiated from bed via an app, had been functioning without incident until it detected an available update at 6.40am and began installing it unprompted, locking the physical power button and displaying a small rotating icon in its place.

"It just said 'Updating, please do not unplug,'" the owner said. "I didn't unplug it. I also didn't have a cup of tea for forty minutes, in my own house, during which the kettle was doing I don't know what to itself."

The family's Californian bungalow, bought three years ago and renovated with a deliberately preserved frontage, leadlight windows and the original picture rails left intact throughout, had been fitted out behind its heritage façade with a fully integrated smart kitchen, on the understanding that the house would look old and behave new.

It was the owner's mother, visiting for the morning and well acquainted with the kitchen's one deliberately unrenovated corner, who ended the standoff by producing a stovetop kettle from the pantry, a wedding gift from 1987 that the family keeps "for emergencies, camping, and apparently this."

"She didn't say anything," the owner said. "She just got up, found it, filled it, and put it on the gas. She had a cup of tea in six minutes. I was still on hold with customer support."

The smart kettle completed its update at 7.58am, chimed twice, and resumed normal function with what its companion app described as "improved boil accuracy" and a new feature allowing it to be voice-activated, a function the household has not yet attempted to use.

"I've started leaving the old one out on the bench now," the owner said. "Just in case. It's never once needed an update."

The firmware changelog, reviewed afterward by the owner out of what she called "pure spite," listed the update as addressing "minor connectivity improvements."