Jailbroken iPhone 3G with iOS 4.2.1 can't be debugged with XCode

Question

I\'m trying to debug my applications with XCode 3.2.5 and jailbroken iPhone 3G with iOS 4.2.1.

When I start debug with enabled breakpoints, applicat

Answer 1

It's likely that your problem can be solved by reauthorizing your device:

1. If your iPhone is plugged into the computer, unplug it

2. In Xcode, display the Organizer (Window->Organizer)

3. In the Devices area click on your device and delete it.

4. Just in case, Quit Xcode and then re-launch it.

5. Open the Organizer again, then plug your iPhone into your computer.

6. Tell Xcode that yes, you'd like to authorize the device.

7. If everything works correctly, Xcode will now download device information for 4.2.1.

If this doesn't work then I suggest performing the steps again, but replace step 4 with removing all traces of Xcode from your computer and then reinstalling it. This includes the entire Developer folder.