Apple will no longer allow users to update or restore an iOS device to iOS 4.3.3. The signing window for 4.3.3 has been closed, meaning that you can no longer restore a device to 4.3.3 in iTunes without previouslysaved SHSH blobsfrom that firmware.
This news is important forjailbreakersthat are either consideringusing JailbreakMe on iOS 4.3.3, or those that may have possibly upgraded to aniOS 5 betawithout saving their blobs. The recently releasediOS 4.3.4 kills the untethered jailbreakthat was previously offered in iOS 4.3.x, so 4.3.3 is the most up to date firmware that offers an untethered jailbreak.
Dev Team frontman MuscleNerd justtweetedthis news. He does note that there are hopefully no 3G iPad 2 jailbreakers that got stuck on an iOS 5 beta. If you’ve updated to iOS 5 without saving your SHSH blobs on iOS 4.3.3 or below, you’re unable todowngradeand keep your jailbreak.
Apple has been stepping up its game, and 4.3.4 wasreleased this past weekendto combat the PDF vulnerability in JailbreakMe.
If you’re already jailbroken on iOS 4.3.3, then don’t change anything!You’re at the most up to date untethered jailbreak that’s available.
If you were wise enough to save your SHSH blobs, you can find the iOS 4.3.3 IPSW from ourdownloads section. You can then use that firmware download with your saved blobs to successfully downgrade back to 4.3.3. Once on 4.3.3, you have access to the untethered jailbreak thatJailbreakme.comprovides.
To learn everything there is to know about downgrading,check out this page.
iOS 4.3.4 has atethered jailbreak with RedSn0w, and so doesiOS 5 Beta 3(which willexpire August 18th). Nountethered exploitshave been announced for anything past 4.3.3.
