As we all know, Apple has already released the iOS 5.1 update to the iOS devices with the couple of new features and prominent security fixes to the older iOS version loop holes It is reported that like always the new iOS 5.1 firmware version also carries the patch on the recently discovered iOS 5.0.1 untethered jailbreak exploit, and the iPhone Dev Team and other jailbreak iOS hackers already started their work to bring the new iOS jailbreak for the users, and as well as informed the users not to update their device to upcoming iOS 5.1 build. However, it is now reported that Apple has finally closed the iOS 5.0.1 SHSH blobs signing windows over their system.
According to the reports from several users, and also from the personal experience Apple has finally closed the SHSH blobs signing windows, and took a first step to force the users to update their device to the latest iOS 5.1 firmware version. However, all the old generation devices can be easily updated to the latest iOS 5.1 and also can get the Semi-Tethered Jailbreak on iOS 5.1 but reportedly, the latest generation devices with A5 processor are not allowed to play with their firmware version, as the jailbreak hackers warned users that the new A5 devices are not fully exploited to the roots level and playing with these devices are not easy for them and as well as producing jailbreak exploit.
For those of you, who are new in the jailbreak community and doesn’t know about anything about the SHSH blobs, these are the important files required by the Apple’s installed security over the iPhone and all other iOS devices that requires by the device and allows users to downgrade their iOS firmware version without any kind of special tricks on the device, and without these files, it is impossible to downgrade your iOS devices to any iOS firmware version. Means, if you have upgraded your iPhone to iOS 5.1 and now wants to return back on iOS 5.0.1 you need the saved SHSH blobs, and if you don’t have you will never be able to downgrade your device on iOS 5.0.1 firmware version.
In the past, we have reminded the user’s couple of time to save their SHSH blobs, as the Apple could release an iOS update anytime to fix the jailbreak security hole, and the other security things. Well, for those who have saved SHSH blobs for their devices can easily downgrade their device from iOS 5.1 to iOS 5.0.1, We have already covered a method to downgrade your device from iOS 5.1 to iOS 5.0.1 with saved SHSH blobs.