When you are going o install iphone 2.0, it is important that you are going to install Iphone Unlock for you to be able to have it easily. Here are steps to follow in getting an installer for an iPhone 2.0. First, you must have to go to "Home" menu screen of your iphone. Find the "Safari" icon and Tap it. Next, find for a site that has Unlock iPhone software that you can be able to download in your iphone 4.
The next thing that you are going to do in Unlock Iphone is to Tap the "Jailbreak" button on a webpage. Leave your iPhone alone until the downloading is done. After it is done downloading, you must have to go to the home of your iphone 4. Next, Tap "Cydia" installer icon that has been added to the iPHone's screen through the Jailbreak procedure to launch it in your iPhone 4.