问题
I developed one iPhone application using iPhone OS 2.2. It works fine in the emulator. When I install the application in my iPhone using iTunes (ipa file), it isn't working.
One thing that : my iPhone firmware is 3.0, is it the problem?
Does iPhone OS 3.0 (on real hardware) work the application that are developed on iPhone OS 2.2 ?
回答1:
no you will need to download the iPhone 3.0 software developers kit (SDK), from the apple iphone developers site. There is a link to download on this page. http://developer.apple.com/iphone/
I believe you also need to sign up to the developers program to actually run your application outside of the simulator. I think the cost to signup for an individual is $100
来源：https://stackoverflow.com/questions/1199510/iphone-firmware