The poster says the update somehow broke their IO IC. That seems unlikely. It's more likely that the update includes new firmware for that chip which contains a

The poster says the update somehow broke their IO IC. That seems unlikely. It's more likely that the update includes new firmware for that chip which contains a bug. In theory, when Apple identify the cause they can update their software so this won't happen for future upgrades. In the meantime, I'm sure they can offer compensation to those with bricked devices who can choose to either put that towards a new computer or send it in for repair.