[keepquestioning]

Why was it possible to mod things like the Xbox, but seems impossible for the iPhone?

What is the key thing that makes it impossible for later tech?

[monocasa]

Secureboot style integrity systems that only boot into envs with ubiquitous signature validation and have lots of hardware protections to maintain that in the face of other bugs.

[throwaway6734]

I wonder if size of machine also adds to the difficulty of modding