Jailbreak
iOS / checkra1n / palera1n
An older iPhone, checkra1n first and then palera1n.
The hard part
Several failed attempts. Apps wouldn’t install, the device rebooted at random, and more than once it ended in a boot loop.
What I took from it
Reading panic logs, understanding the boot chain, and not trusting every tutorial — which is the same lesson the hackintosh taught me later, on harder hardware.