If you are still expecting untethered iOS 4.3.4 or iOS 4.3.5 jailbreak, let us tell you that most probably its not going to come. The reason is very simple. iOS 5 public version is expected in September along with iPhone 5. iOS hackers will be putting their effors to jailbreak iOS 5 on iPhone 5 device.
iOS 4.3.4 was introduced to patch the vulnerability in Safari browser found by Comex. The same vulnerability was used by the young hacker to write a jailbreak exploit named JailbreakMe 3.0. It was intended primarily for the iPad 2 jailbreak. Apple patched the bug which also caused JailbreakMe 3.0 to become useless in the latest version.
Remember JailbreakMe 3.0 was the only solution to jailbreak iPad 2 on iOS 4.3.3. Other devices including iPhone 4, iPhone 3Gs, iPad1, iPod Touch 3G and iPod Touch 4G were already enjoying untethered 4.3.3 jailbreak using Snowbreeze and Redsnow.
Those who are still on iOS 4.3.3 are the blessed ones because iOS 4.3.3 is where jailbreak exists. If you have previously saved your iOS 4.3.3 SHSH blobs, you can downgrade from iOS 4.3.5 or iOS 4.3.5 back to iOS 4.3.3 to enjoy untethered jailbreak. Those who have not saved 4.3.3 SHSH hashes and upgraded to iOS 4.3.4 or iOS 4.3.5 can only wait for iOS 5 and then its untethered.
???Apple is making it more and more complicated for the jailbreakers community. We hope iOS jailbreakers will be trying their hard to release iOS 5 untethered jailbreak as soon as it releases.