I've had a jailbroken 4.2.1 iPhone 3G for a while now. I was able to have some apps that weren't compatible with the software because 4.2 was too old, like the new Echofon app. But my phone messed up and I had to restore and re-jailbreak it. Now I can't even have the app anymore when I tried syncing as it said something like "This app is only compatible with a 4.3 software and up" or something like that. Does anyone know how I can get this app still and to make it work on my phone?