Tried updating my jailbroken iphone

28-Dec-2017 22:53

tried updating my jailbroken iphone-81

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In order to enforce this limitation SHSH blobs were introduced, which is a hash signature system.

Although this is getting technical, an SHSH is created by an SHSH formula with 3 or 4 TSS keys (say with me).

In the early days you could downgrade your i OS device to any firmware version you wanted to and not run into many troubles.

This is because firmware restores never had to be approved by Apple, but starting from i OS 3.0 onwards Apple implemented a technology called You see, when you restore your i Phone, i Pod Touch or i Pad through i Tunes your device phones home and ensures that it is allowed to be restored to a specific firmware version.

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Simply scroll through our section for the firmware version you are trying to downgrade to, and read one of our easy to follow how to guides on downgrading your i Phone, i Pod Touch, i Pad, Apple TV or even Play Station.If you still have a problem, you’ll need to reset the device as new and then restore it from the backup you made.