Yes it’s possible now to unlock your iPhone version 1.1.2 or 1.1.3 out of the box

No PC or Mac required and very easy steps !

You must start with a jailbroken 1.1.2 or 1.1.3 phone (see tutorial in this site), connected

vi Wi-Fi to the Internet

1 - Add the Big Boss experimental sources to your installer

2 - Using installer, install the Geohots Gunlock Script

3 - You MUST have BSD Subsystem and Terminal vt100 installed (or install them now using the iphone Installer)

4 - Exit the Installer

5 - go to Settings : Set Autolock to Never

6 - Set Airplane mode to ON

7 - Open the Terminal

8 - Type the following commands

cd /usr/bin

geounlock

9 - it takes about 30 seconds to run . That’s it !!

Enjoy your unlocked iphone !!

Unlock was written by “Geohot”

feel free to donate to him !!

In case of loss of signal (bricked phone) under 1.1.3,
use the Iphone-Elite team unbricktool

download it here http://code.google.com/p/iphone-elite/downloads/detail?name=bricktool.zip&can=2&q=