Jailbreak Warning: Don’t Update to iOS 5.1

March 7, 2012 at 10:58 pm

The iPad announcement is just about to begin, and since new iPad owners will be looking to potential future jailbreaks, the iPhone Dev Team has issued a reminder for jailbreakers. The new iPad will most likely come with iOS 5.1, and if not it won’t be far behind. So, let’s all remember that when iOS 5.1 goes live, do not accept the update right away. Doing so could result in a loss of your jailbreak. While the Dev Team has been hard at work looking for exploits in the 5.1 beta releases, you never know what Apple will throw in the mix to thwart your jailbreak. Here’s a few key tips and exceptions to keep you up to date on the latest jailbreaks.

  • Soon after 5.1 appears on Apple’s public servers (i.e. iTunes starts to offer it), Apple will stop signing 5.0.1 SHSH blobs.
  • If you have an iPhone4S, the basic rule above is really the only rule:  you cannot restore back to 5.0.1 once the 5.0.1 signing window is closed, no matter what (even if you saved your SHSH blobs).
  • If you have an iPad2 with saved 4.x hashes, you can in fact downgrade to that 4.x but you won’t be able to get to 5.0.1 once the 5.0.1 signing window is closed (even if you saved your 5.0.1 SHSH blobs).
  • If you have a device earlier than the iPad2, you can downgrade to whatever version you want, as long as you have saved SHSH blobs for that version.  You’ll need the assistance of geohot’s limera1n exploit with tools like redsn0w to get into “pwned DFU mode” and bypass the downgrade restriction.

As always, we’ll be watching all new developments on an iPad 3/HD jailbreak over the coming months.

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