Some Samsung smart fridges stopped working on Tuesday due to a firmware update.
Korean outlets were the first to report the problems, which affect Samsung’s Bespoke AI line of fridges. Star News Korea, per a Google-provided translation, said that most of the affected devices were four-door fridges from 2024 or later.
PICs are cheaper than discrete ICs, even if they’re programmed only once and shipped. This is why you’ll see mainboards with un-populated sections - the processor has a software build that either excludes the un-populated parts or is designed to detect and ignore them. A discrete IC would need far more engineering to be able to selectively ignore, or each model would need it’s own discrete IC.