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[rocket188]

okay, so i had a jailbroken iphone 3g and it has 2.2.1 and i fully restored
it, and i downloaded itunes8.2 and it was fine so will it be okay to intall the 3.0 os if i restored my iphone?

 

[Neutrino]

okay, so i had a jailbroken iphone 3g and it has 2.2.1 and i fully restored
it, and i downloaded itunes8.2 and it was fine so will it be okay to intall the 3.0 os if i restored my iphone?

Yes. But, you can't currently jailbreak using iTunes 8.2.