Tutorial On How To Patch MobileInstallation File In iPhone 3.1. I believe many of you have already updated to iPhone OS 3.1 firmware since PwnageTool 3.1 already released and step by step guide to Jailbreak And Unlock iPhone 3.1 is available everywhere, but there’s a problem comes up that app from your jailbroken iPhone doesn’t work anymore. No matter what you, these app just stop working, this is happening because of the apps need a patched version of MobileInstallation file on iPhone.
There is something you need to do get your mobileinstallation file patched on your iPhone, but firstly your iPhone have already been jailbroken, if you have not jailbreak your iPhone follow this guide, then follow these steps:
- Head to Cydia.
- Hit on Manage tab on the bottom.
- Touch on Sources
- Go to Edit afterward to Add. You will be asked to fill the blank form with url source just type: http://cydia.hackulo.us and hit on Add Source.

- Now your source will be automatically updated by Cydia.
- Wait the installation process finished, and then, search for AppSync for OS 3.1 in Cydia and install this application. Your mobileinstallation file will now be automatically patched by the app.

All of jailbroken apps on iPhone OS 3.1 firmware can be installed now