There might be times when you want to try out cracked applications on your iPhone, iPod touch or iPad. But sadly you cannot directly install cracked Apps on your iDevice. But you can use AppSync to install cracked Apps on your iPhone. If you have updated your iPhone firmware to the latest iOS 4.0 then you can use AppSync 4.0 to run cracked apps on your jailbroken device. AppSync 4.0 basically patches the MobileInstallation file on your iPhone or iPod Touch which is required to run cracked apps on your jailbroken iDevice.

Guide To Install AppSync 4.0 on iDevice With iOS 4.0

• Start “Cydia” on your Jailbroken iPhone on iOS 4.0.
• Touch on “Manage” tab on the bottom of the screen and the touch on “Sources”.
• Now touch on “Edit”, and then on “Add”. When prompted, enter the url as “http://cydia.hackulo.us” and click on“Add Source”.
• Cydia will now automatically update your sources by following a series of automated steps.
• Once the installation is completed, search for “AppSync for OS 4.0” in Cydia and install the application.

Installation of AppSync will automatically patch the MobileInstallation file on your iPhone or iPod touch running on firmware 4.0. After this you will be able to install .ipa files manually on your iPhone running on 4.0 firmware.