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Finally iOS 6 has been released to the public and therefore the devices that are capable of running 6.0 can go ahead and download iOS 6 for their iPhone, iPad or iPod touch. But before you do that, you should definitely read this post about downgrading to a lower firmware from iOS 6 for various Apple devices.
Downgrade iOS 6 To iOS 5.1.1
Musclenerd of the iPhone Dev Team tweeted telling us that Redsnow is soon going to be updated with pretty cool features such as the Re-restore. But before that most of you will be interested in downgrading from iOS 6 to iOS 5.1.1. So lets have a look at which devices can be restored to the lower jailbreakable firmware iOS 5.1.1 from non jailbreakable iOS 6.
iPhone 4/3GS iPod Touch 4 Downgrade From iOS 6 To iOS 5.1.1
Those of you who own A4 devices such as the iPhone 4, iPhone 3GS and the iPod touch 4 are in good hands, as downgrading to a lower firmware such as from iOS 6 to iOS 5.1.1 won’t be that hard. This is because restoring process in iOS 5.x can easily be exploited therefore giving the users ability to downgrade to a lower firmware.
Another good news is that this exploit can never be fixed by Apple, therefore making it a permanent restoring process for A4 devices such as the iPhone 4.
iPhone Dev Team mention:
A4 devices and 3GS will always be downgradable (and jailbreakable) with saved blobs due to limera1n. The tethered iOS6 jailbreak for those devices (and untethered for old-bootrom 3GS) will be out when Cydia and other important pieces are all working properly.
iPad 2 Downgrade From iOS 6 To iOS 5.1.1
iPad 2 owners can breath a sigh of relief as you are in the safe zone too. If you have an iPad 2 you can restore to iOS 5.1.1 from iOS 6 even if the iOS 5.1.1 window closes. But do remember that you must have iOS 5.x and 4.x blobs saved for your device.
iPad2 owners who have both 4.x blobs and 5.x blobs will always be able to downgrade to those versions, even once you come up to 6.0 and the 5.1.1 window closes (don’t do that yet though!). You need both 4.x and 5.x blobs to qualify for the 5.x downgrade even though you only wish to downgrade to 5.x (you need only your 4.x blobs to downgrade to 4.x)
iPhone 4S & iPad 3 Downgrade From iOS 6 To iOS 5.1.1
If you happen to own an iPhone 4S or iPad 3, well folks this is might not that be great for you. So let me directly jump in.
iPhone Dev Team is soon going to introduce a new feature called re-restore which will basically allow you to restore to iOS 5.1.1 from iOS 5.1.1. Confused? Well what it will allow you to do is; give you ability to restore to a fresh piece of IPSW file, might come in handy if you mess up your iPhone 4S or iPad 3 while being jailbroken or any other circumstances.
So lets say you have iOS 5.1.1 blobs saved and something happens to your iPhone 4S or iPad 3, you need to restore to iOS 5.1.1 but the window has been closed, so what do you do? Well that’s where Re-restore comes in. It will allow you to re-restore to iOS 5.1.1 from iOS 5.1.1. But if you happen to update to iOS 6, well you won’t be able to restore back to iOS 5.1.1.
Note: This also applies to those iPad 2′s which can not be restored.
iPad3, i4S (and iPad2 owners who don’t satisfy #2) will always be able to RE-restore the current 5.x OS that’s already on their device. So if you’re at 5.1.1 when the window closes (and you’ve saved your blobs), you’ll always be able to RE-restore to 5.1.1 again. This makes the 5.1.1 jailbreak a lot less fragile — you don’t have to worry about messing up your install with funky extensions or getting into a boot loop, because you can always RE-restore from 5.1.1 to 5.1.1 again (or from 5.0.1 to 5.0.1 again, etc). But once you fall off the 5.x train by restoring to 6.x, you’ll be stuck there until the next jailbreak.
That basically sums most of the questions you had in mind about downgrading from iOS 6 to iOS 5.1.1. But if you still have any questions about downgrading then hit the comment section below and we will get to you.