Untethered Jailbreak for iOS 5 Discovered, Work in Progress
Exciting news for those who like to jailbreak the iPhone and iPad, a Dev Team member has discovered a bug that will allow for an untethered iOS 5 jailbreak. No time estimate has been given by @pod2g, but he cautioned on Twitter not to expect a release soon, although he is actively working on the jailbreak.
There is a jailbreak for iOS 5 available right now but it is limited to a tethered experience. You can read about the difference between tethered and untethered jailbreaks but the simple answer is that an untethered jailbreak is always preferential because it does not require the iOS device to be connected to a computer during boot. This means you can reboot an iPhone or iPad on the go and have full access to all applications, whereas a tether won’t without the assisted boot procedure.
There is a so-called “semi-tether” jailbreak available for iOS 5 right now, and while it’s better than nothing it’s still fairly limited in that it requires a tethered boot for full device and app usage.