How Do I Restore My Unlocked Iphone Back To 1.1.4 Without Bricking It?

[maddheezy]

Ok, so I have an unlocked 1st gen iphone with 1.1.4 firmware installed. I used ZiPhone to unlock my phone. I want to undo the unlock/jailbreak, and go back to normal 1.1.4 so I can just go ahead and get AT&T's iPhone data plan. How do I do this without bricking the phone? Please help urgently!

 

[maddheezy]

please someone i need help

 

[Opie]

i believe a simple restore will do the trick. i only had mine jailbroken from ziphone and my restore went great. let me know how it goes.