It's fairly simple and I'm sure mostly everyone here knows how. But for those who don't; 1. Use Total Commander or whatever you use to access your iPod Touch. 2. Get to \System\Library\CoreServices\ 3. Copy SystemVersion.plist over to your computer 4.Edit the line that says <key>ProductVersion</key> <string>1.1.3</string> To <key>ProductVersion</key> <string>1.1.2</string> 4. Save it and re-upload. 5. Fire up Installer and install it. Notes: If Customize won't launch, install Touch Calender Fix under the Tweaks section and it will launch.