Last evening MuscleNerd announced on his Twitter account that Apple has blocked the possibility of saving SHSH for version 4.3.3 of iOS. This remains the last version of iOS 4 on which we can still do an untethered jailbreak on all compatible iDevices and iOS 4.3.4 only offers us a tethered jailbreak and the impossibility of jailbreaking the iPad 2. It seems that Apple has offered the possibility for a few days to return from iOS 5 beta to 4.3.3 for those who needed it, but from now on you will not be able to restore to iOS 4.3.3 unless you have a SHSH saved on your computer or in Cydia.
Be very careful what you do from now on with the iPad 2 tablets because an update to iOS 4.3.4 will make it impossible to return to iOS 4.3.3 because Apple no longer signs SHSH for the baseband in iOS 4.3.3.
