Has anyone managed to get InstallerApp from Rip Dev working on their 3Gs?  I (stupidly) purchased a license before I checked whether this would work.  The application on Windows does not seem to recognise 3.0 firmware files ( drop down box only has iphone 2G firmware as an option).  This means that I cannot do the 'push' procedure which allows me to download cydia and installer apps without jailbreaking.