my iphone4 is currently running 4.0.1 i want to upgrade to 4.1 i created the ipsw using pwnage tool tried to upgrade it using itunes and it says my phone is not eligible for the upgrade. i was using itunes 10.1.1 i downgraded it to 10.0.1 and 10.0.0 both of which gave me the same error. I'm running mac osx 10.6.6 , not sure what i'm doing wrong or if there is anything i can do to get this done. Any help would be greatly appreciated.