How do I get Apps installed on iPhone OS 3.2 (iPad 1)?

I'm using iFunBox 1.6 (older than iFunBox Classic so it should work) on Windows 7 with iTunes 10.6, I have managed to get cydia substrate to work and I have AppSync for OS 3.2 installed but I can't install any apps. Any tips?

Also, no I won't be updating the iPad.