There was a time when downgrading iPhone, iPad or iPod Touch to an older iOS version used to a much talked about process. The topic was almost as popular as the jailbreaking process itself. With Apple making iOS more secure over time and forcing users to upgrade to latest version by closing the signing window of older software versions, downgrading lost its charm and downgrade facilitating tools, such as TinyUmbrella, became outdated with lack of support to downgrade from recent versions.
TinyUmbrella helped iOS users to save SHSH blobs for the current versions of iOS in order to ensure downgrading back to that version in the future. However, this latest tool that goes by the name OdysseusOTA, promises to downgrade to iOS 6.1.3 without SHSH blobs. Which means you don’t need to use downgrade process facilitating utilities such as Tinyumbrella.
Why downgrade to an older iOS version such as iOS 6.1.3 from iOS 7 or iOS 8? If you’re an old iPhone or iPad user, you might already know that these new iOS version make older devices such as iPhone 4s and iPad 2 very slow and sluggish to use. If you’ve got an iPhone 4s or iPad 2 and want to downgrade back to iOS 6.1.3 because of sluggish performance on iOS 7 or 8, OdysseusOTA is for you.
OdysseusOTA is a command line tool released by a hacker that by the name e1ghtSpace on Reddit. It allows your to downgrade iPhone 4s and iPad 2 to iOS 6.1.3 firmware. Both the iPad 2 and iPhone 4s devices were released back in 2011 and were powered by Apple’s A5 chip.
The hacker explains that his downgrade tool works on iOS devices that have been on iOS 5.0.1/5.1.1. So this tools is compatible with iPhone 4s and iPad 2 only because Apple is still signing iOS 6.1.3 for these two devices, so it won’t work on other iOS devices.
This tool will only work on devices that have been on iOS 5.0.1 or (possibly) iOS 5.1.1. This means that only the iPad 2 and the iPhone 4S is supported.
Why? Because Apple made a mistake in their code and devices that are on one of the two mentioned iOS’s MUST update to iOS 6.1.3 (if they are updating via OTA) in order for their deceive to be able to update to latest iOS version.
Can Apple stop people from using this exploit?
No because then devices on iOS 5.0.1 or iOS 5.1.1 would not be able to update via OTA.
Here’s the video demonstrating the downgrade process using OdysseusOTA:
You can find the link to download OdysseusOTA and the readme.txt file, which contains the list of commands, in the description of the video.
For guides on jailbreak, follow these links:
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