Like all other third party tweaks and software, installing iWorld requires that you jailbreak your iPhone. Owners of 1.1.2 iPhones can jailbreak their phones by downgrading to firmware version 1.1.1, using the jailbreakme.com (or AppSnapp) 1-step jailbreak process, and properly upgrading to 1.1.2. Once jailbroken, users can quickly and easily install iWorld via Installer (aka AppTapp) by heading to the Tweaks section and selecting iWorld from the menu.

Once iWorld is installed, the crash problems should be alleviated. Early reports from users around the web indicate widespread success. Unlocked French iPhones have been reported working with SIM cards from China, Korea, Thailand, and the US once the iWorld tweak is installed.

As always, jailbreak your iPhone at your own risk and understand that jailbreaking includes risks to your iPhone's warranty through Apple. Should you decide to use the AppSnapp (jailbreakme.com) jailbreak method, be sure to be aware of the following potential requirement.