Forking the iPhone

The title is misleading.

I clicked on it, thinking it was some kind of homebrew/OSS development on iPhone but it first goes into excruciating details about Apple financials before arriving at the "fork".

The "fork", as per my understanding, being the new logic and battery design.

The author:

https://en.wikipedia.org/wiki/Jean-Louis_Gass%C3%A9e