iOS 7.1 Beta 4 Reportedly Patches the evasi0n7 Jailbreak
Apple's Monday seed of iOS 7.1 beta 4 to developers reportedly patches the evasi0n7 iOS 7 untethered jailbreak, Tweets well-known iOS hacker ih8sn0w.
According to the hacker, iOS 7.1 beta 4 closes a kernel exploit used by the evasi0n7 jailbreak tool, but the new seed does not fix a code-signing bug used by the evasi0n7 jailbreak tool.
Because the patch for the evasi0n7 jailbreak was implemented in a beta pre-release of the software, we do not expect evasi0n7 to be updated to support iOS 7.1 beta 4, even though evasi0n7 was recently updated
to support iOS 7.1 beta 1,2, and 3. The only reason that iOS 7.1 beta 1, 2 and 3 were supported by evasi0n7 is because all of the vulnerabilities were still existent in those firmwares.
Any type of additional work on a jailbreak would have to wait until a public release of iOS 7.1, where a final version of the software is released to the public. Wasting exploits on beta software is generally not a good idea, as Apple will promptly fix the issue in a future beta. Apple is much slower to patch jailbreaks in public software releases.
If you're happily jailbroken on iOS 7.0-7.0.4, we suggest staying on your firmware and enjoying the benefits, as there is no real benefit to iOS 7.1 or any of its betas. If you're on iOS 6 and you're contemplating upgrading to iOS 7, you might want to do so soon before Apple releases iOS 7.1 to the public and stops signing jailbreakable versions of iOS 7.