How the first gen ipod was reverse engineered to run #Rockbox:
1. Someone figured out that when loading a particular HTML page (for viewing on the device), the device would reboot. It crashed. A buffer overflow in the HTML viewer!
2. The device remembered what it did before the crash, so it would ...
I still manage my library in apple music, so I do not mind. But my iPods are nodded and sometimes syncing does not work, as the Mac or Music app do not remember the iPod. Syncing more than 180 GB then takes forever at USB 2.0 speeds..