Fake macOS Update Screen

A fullscreen imitation of the macOS software update screen, complete with a time estimate that means nothing. It draws pixels in your browser and nothing else — no files are touched and no setting is changed on the machine.

Freeze pins the counter where it stands, which is the joke. Nothing moves until you press Start, it pauses when you switch tabs, and leaving fullscreen — with the Exit button, Escape or F11 — ends it immediately.