I’ve never posted this so here it is,
the full version of a review paper on Jailbreaking iOS, I’ve posted a while ago.
It’s not totally up to date anymore, but it covers the history of jailbreaking, the reasons it exsists, the technical background as well as the inner workings of some of the most recent tools which at the time of writing this paper have been Star or greenpois0n.
I didn’t’ really follow the recent developments in this field since writing this, so feel free to drop a comment if you have anything to add or feel like something needs to be updated.