Every time Apple releases a new version of iOS, there’s a good chance they have broken existing jailbreak techniques with it. If a public jailbreak has already been released, it means your jailbreak has gone away; if a public jailbreak hasn’t yet been released, an update can kill an exploit that will delay a public jailbreak by months.
Yesterday, Apple released iOS 7.0.4, but did they break the possibility of an iOS 7 jailbreak? Are you safe to update?
That didn’t take long. Google Glass won’t be available to the general public for at least a year, and it’s already been hacked. For Apple’s iOS, “jailbreaking” refers to essentially rooting the OS to gain complete access. Developers can then use that access to create system-level tweaks that Apple won’t let in the App Store.
Android is a little different, because rooting the OS isn’t something Google discourages or combats. Since Google Glass technically runs on Android, it can be “jailbroken.” That’s exactly what Jay Freeman, better known as “saurik” in the iOS jailbreak community, has done. Freeman runs Cydia, the jailbreak app store for Apple devices, and today he turned his attention to cracking his Google Glass prototype.