> Also I'm aware of at least one game that uses an internal executable restart routine to reboot and reload data on PS4 and X1 since it's just easier than dynamically unloading all engine data and loading it again following an in-game update. While not forbidden by either 1st party, it's certainly somewhat unorthodox.

Microsoft put out a video soon after purchasing Bethesda where someone from that team mentioned doing a similar trick in the Xbox port of Morrowind. If the game was approaching the relatively tight 64MB RAM limit of the platform it could soft reboot the console during a loading screen and then reload to the current point.