Quickpwn

Latest version of Quickpwn enables you to unlock iPhone 3G with all the features included in the older version of Quickpwn. First you need to download Quickpwn and jailbreak. Before doing this you need to update your phone with the latest firmware available with apple. It is really simple and quick way to unlock iphone.

Unlock.no

This site will guide you to unlock iphone in just 30 minutes without any need to disassemble the set. This is the original process followed by the Dev team who first unlocked iphone. This site tells every thing about jailbreak, unlocking iphone and guide’s you with troubleshooting if required. This process enables you to connect iphone via Wi-Fi during the process of unlocking. You can find a link to download a file which enables to unlock iphone in a step by step manner just by following on screen instructions. This site also has step by step tutorial explaining the process of unlocking the iphone.

Pwnage

Pwnage tool has the ability to unlock iphone 3G as well as the previous versions of iphone. It can be used to jailbreak and unlock iphones. Using the latest version of firmware re-lock of iphone is not done by using this tool. It comes with features where in you can do partition and manage space available on the iphone and has the feature to choose custom logo settings.

Yellowsn0w

This is the updated version of original Dev team software, which can be used to unlock iphone and jailbreak it. In this they have included pin lock support. If you have used previous version of this software and faced some problems, try the latest version it works with out any problem and offer’s free unlock.

iPhone Unlock Toolkit

This iphone unlock toolkit offers total solution for unlocking iphone. No need of subscribing to AT&t any more to use your iphone. Unlocking iphone is done with in minutes and this software gives any updates if necessary. Keep your phone up to date by using this toolkit. Enables GPS and RSS feeds to iphone. Once unlocked iphone works with any sim. iphone unlock toolkit enables iphone to work in any country.

AppTapp

This tool is used to unlock iphones. Before you can run this program you have to jailbreak iphone using iNdependence and then update the firmware with the file provided with the software and then run the AppTapp software to unlock iphone. This is a bit complicated method but by following on screen instructions you can unlock iphone. Unlocking iphone takes about eight steps. It works for iphone If the iphone is not unlocked at the first attempt try once again it will surely work.

Pwnage 2.2.5 for Mac
Pwnage tool 2.2.5 enables unlocking iphone with firmware version 2.2.1 on a Mac system. This latest version of pwnage from the Dev team is the first version to unlock 3G iphones on the Mac systems. This software allows the user to update using itunes software. Yellowsn0w can not be used with the baseband version. If you want to use yellowsn0w then you have to customize .ipsw to allow using yellowsn0w. Mac users using 10 X 10.5.6, DFU mode will not work properly.

www.iphonehacks.com

In this site there are lot of information about different tools and download links to unlock iphone. Apart from this this site provides with latest updates and news related to iphone.You have the option of updating the firmware form this site which allows the user to bypass the itunes site minimizing the risk of phone re-locking.
There are many different third party downloads available at no cost, free to download and use.

Latest versions of Quickpwn and Pwnage tools are available on this site which allows you to unlock any version of iphone. Different files for both windows and Mac are there to download.

AnySim 1.0.2

This application unlocks the iphone using the original technology of Dev team. This is the revised version of 1.0.1 which is said to have many problems. In this revised version those problems are resolved, those who used 1.0.1 version and faced problems, now try this latest version it is problem free. This tool runs only on the Mac systems.

ZiPhone

This tool works with both windows and Mac. Using this tool jailbreak, unlock, and activation of iphone is very simple. It unlocks all versions of iphones so enabling to use any sim card. Limitations of this tool is after unlocking you can not use it for google maps, locations and not able to use on non-apple synchronized wireless networks.

How to unlock iPhone 2G

Quickpwn
Quickpwn is one another tool used to unlock iphone. Only iphone 2G can be unlocked using this tool. Coolest part of this tool is it allows iphone to synchronize with itunes and enables to update with the latest firmware available with itunes.Besides unlocking iphone it enables you to install third party software’s to your iphone.You need to connect iphone via USB cable to the system. This tool allows you to upgrade and unlock iphone 2G. Step by step procedure can be found here

Disclaimer: These methods are provided for just educational purposes only. We are not responsible for damage, loss or anything that occurs.

sources:
http://www.crunchgear.com/2009/01/01/how-to-unlock-your-3g-iphone/