If you have jailbreaked iOS 4.0 or iOS 4.0.1 on your iPhone or iPod Touch then you might need to patch MobileInstallation file on your device which then allows you to install cracked apps on your device without iTunes. To patch the MobileInstallation file, you need AppSync which you can easily install on your jailbroken iDevice using the step-by-step guide below.
- Open Cydia on your jailbroken iPhone / iPod Touch.
- Click on the Manage tab at the bottom.
- Click on Sources section.
- Click on Edit button at the top left of Cydia.
- Click on Add button at the top right of Cydia.
- Enter http://www.sinfuliphonerepo.com/ as Cydia/APT URL and click on Add Source button.
- Cydia will now automatically update your sources by following a series of automated steps.
- Thats it! Now click on the Search tab at the bottom and search for AppSync for OS 4.0/4.0.1
- Click on AppSync for OS 4.0/4.0.1 and install it!







Thats it! Now you can enjoy all jailbroken apps on your iPhone / iPod Touch running iOS 4.0 or iOS 4.0.1
Some users have reported that AppSync 4.0 also allows you to install cracked apps on devices running iOS 4.0.1. So if you want to install AppSync 4.0, click here for step-by-step instructions.
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