What a “Tethered” Jailbreak Means for iOS 4.2.1

As I mentioned yesterday, the current redsn0w jailbreak for iOS 4.2.1 is currently still a tethered jailbreak for some devices. The Dev-Team has updated their recent post on jailbreaking iOS 4.2.1 with a definition of what a tethered jailbreak means. A great idea! Since most people are a little confused about what exactly a tethered jailbreak is. Below is the definition via the Dev-Team.

Update #2: The notion of a “tethered” jailbreak is pretty new to many people, so here’s a quick rundown on what to expect:

    1. If you’re on an iPhone3G, old-bootrom iPhone3GS, or non-MC ipt2g, life is easy. redsn0w installed an untethered jailbreak and so nothing below applies.
    2. “Tethered” does not mean you cannot boot at all without PC/Mac assistance. If you have not installed any tweaks that hook into important programs like SpringBoard or CommCenter, your device will actually boot. However, jailbreak programs like Cydia won’t work (and Cydia may still have a white icon). Also, certain built-in apps that had to be moved by Cydia will fail (Safari being the most noticeable example).
    3. If you’ve installed MobileSubstrate tweaks that hook into SpringBoard or other important programs, your boot will actually fail (you’ll get stuck at the Apple logo). You need to use redsn0w to “Just boot tethered right now”.

Remember, @comex and others are working on a way to untether the 4.2.1 jailbreak. Meanwhile, the above 3 points hopefully will make it all seem less confusing :)

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Comments

  1. how can i jailbreak my ipod touch

  2. srinivas t says:

    cydia is not appearing in my appleiphone4.2.1?

  3. Plzzzzzzzzz give me Firmware 6.1.3 jealbreak for my iphone 4

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