Complete Video Guide How To Downgrade Your iPhone v1.1.1 to v1.0.2

After Downgrade v1.0.2 You Can Unlock Your iPhone.

[Only registered and activated users can see links]

Thank you but where to get software and flash ?

Everyone be ware that the iPhone still remains unlock i.e. your SIM will NOT work. It will keep showing you a "Invalid SIM" message box.

There yet hasn't been any Theory or software solution to make your iPhone full functional as a phone after downgrading from v1.1.1. Please DO NOT been mis-alarmed or purchase any software which promises to fully unlock your v1.1.1 iPhone.

This post is older, but this is for new users to IPhone who see this.
You don't have to downgrade anymore. There is a way to unlock v.1.1.1

However, the new IPhone-s for Europe, they have v.1.1.2 on them.
The unlock with come out pretty soon, I guess.