cant access new frameworks with xcode 3.2?

i had x code 3.1 and sdk 3.2 but i wanted to use new frameworks so i installed x 开发者_JAVA百科code 3.2 but i cannot run new applications now.can anyone tell what is the problem?i also want to tell that i installed only x code not iphone sdk

For iOS/iPhone development you need to download the complete Xcode 3.2.4 + SDK 4.1 .dmg (over 2GB image) from the iOS Dev Center. Other combinations than the current and prior downloads aren't tested and rarely work.