Untethered is a term that refers to the fact the phone can be restarted and powered off and on as normal, with the jailbreak still functioning – clearly the best option although it’s harder to achieve. A tethered jailbreak, on the other hand, requires you to connect you iPhone or iPad to a PC or Mac every time your phone is restarted in order for the jailbreak to work.
The fact there’s a working untethered jailbreak is hugely significant as it means there’s hope that both Apple’s future operating system, iOS 8 and the iPhone 6 could see a compatible jailbreak launched soon after their release. It’s important to realize, though, that releasing the jailbreak now is actually not the best option. They work by exploiting vulnerabilities in the operating system and every time they release a jailbreak, Apple usually acts to block it quite quickly.
As such, given how hard it is to find new vulnerabilities, it makes very good sense to wait for the launch of the new iOS or Apple’s long-awaited iPhone 6 so new owners stand a chance of getting on the jailbreak bandwagon. Sadly, this also means that if you’re currently looking to jailbreak your Apple device, you’ll have a to wait a little longer as it’s unlikely the jailbreak will be released on iOS 7.
This meant anyone that wanted to keep their device jailbroken was forced to stay on iOS 6 and not upgrade to iOS 7. With Apple having since patched the latest Jailbreak, which was provided by evasi0n and worked up until iOS 7.0.6, jailbreakers were left wondering if and when the next jailbreak would be released.
Thankfully the ‘if’ part seems to have been answered in the last day or two as well-known hacker i0n1c posted a video in his YouTube channel showing what appears to be a fully-functional, untethered jailbreak working on an iPhone 5C. via