How can I downgrade my iPhone from firmware 1.1.1 to 1.0.2 or earlier?

How can I downgrade my iPhone from firmware 1.1.1 to 1.0.2 or earlier?

Since Apple released iPhone firmware update 1.1.1, there has been a lot of griping and complaining about Apple "re-locking" the iPhone. Users with SIM unlocked iPhones have had their phones bricked, while those who installed third party enhancements and applications on their iPhone have had these applications rendered useless.

Thankfully, thanks to a user in the Hackint0sh forums, a method of downgrading your iPhone firmware (previously thought to be impossible) is now available.

iPhoneAtlas, another iPhone-dedicated site, has done a great job of fleshing out the instructions provided on the forum into a set of detailed, easy to follow instructions. Rather than rehash them here, just head to iPhoneAtlas for the details.

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The 2.0 hack was completed by the iPhone Dev Team, and the hole that was found is described by the Dev Team to be considerably difficult for Apple to close. According to Gizmodo, the hole may be considered "impossible" to close.

Many users have found themselves unable to upgrade their iPhones to OS 2.0.1 (bugfix release) because of an unspecified error. In several cases, there is a workaround to avoid this issue.

there has been a lot of griping and complaining about Apple "re-locking" the iPhone. Users with SIM unlocked iPhones have had their phones bricked, while those who installed third party enhancements

Yes thats true,but its true in the case of persons who have installed the third party enhancements.
Otherwise why my iphone would wok fine?
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Yes thats true,but its true in the case of persons who have installed the third party enhancements.
Otherwise why my iphone would wok fine?

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iPhoneAtlas, another iPhone-dedicated site, has done a great job of fleshing out the instructions provided on the forum into a set of detailed, easy to follow instructions. Rather than rehash them here, just head to iPhoneAtlas for the details.

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