I did a quick search on Ifunbox didn't see anyone mention how to use Ifunbox with Installous to backup your IPA files. This process is much easier than using SSH. Here is what you need to do:

1. Install Installous app of course.
2. Google Ifunbox or simply go to i-FunBox | File Manager and Hi-Speed Transfer Tool for iPhone and iPhone 3G (iFunBox Download Page) to download it.
3. Just unzip the compressed file there should be Ifunbox.exe file.
4. Connect your idevice to the USB port.
5. Double click on Ifunbox.exe. Ifunbox will automatically detect and connect to your idevice.
6. In ifunbox expand Raw File System/User/Library
7. Click on Download. Here are all your game IPA file in Installous. You can simply drag them to your PC to have another copy of IPA file.

Of course, you download IPA files and simply drag it into this folder so you can use Installous to install the app for you. I know lot of people have complain Appulo.us is very slow. If you can find the IPA file somewhere just download it to your PC then transfer it into your idevice via Ifunbox. The installed games will appear in Raw File System/User/Applications folder. I am hoping someone can figure out how to hack the save game files using some sort of hex editor.
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Thanks, it works like anything....