Dual-booting

CoolBooter demo: the dual-boot tool for iOS

Developer Jonathan Seals recently released a new piece of work called CoolBooter, an interesting tool which allows some 32-bit devices to dual-boot different iOS firmwares. With a simple reboot it can allow, for example, switching between iOS 6 and iOS 9. Whilst this functionality is commonplace in the desktop computing world, booting multiple operating systems on iOS devices is much rarer.

Sebastien and I talked briefly about the tool on Let’s Talk Jailbreak 157, and in this article I’ll give some more info, as well as a video demonstration of it in action.