I am wondering how I can upgrade to 4.0.1 from 3.1.3 but keep all of my apps that were installed via Installous, or at least keep all the data so I can put it back in to the phone once I upgrade to 4.0.1
If you use Rock to jailbreak, you make an account that you can log on to every time you upgrade and it will install all your previous jailbroken apps. For the future that would be useful