I need to create a IPA with out Developer account and Provisional profile. I have done this before in Xcode 5 by made a little change from Xcode by using this instruction
GoTo /Applications then right click Xcode.app and click "Show Package Contents"
Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/SDKSettings.plist
find and change its value from YES to NO. Save the file.
But it's not work for Xcode 6.1 and iOS 8.1
Also i have jailbreak my device.
If any one create unsigned IPA in Xcode for iOS 8.1 please provide me a solution.