Could not download and install iOS 7.1 Simulator. Authorization is required to install the packages.
Facing this issue on Xcode 7 Beta 6 version too.
Can't seem to understand why?
Xcode 7 does not support iOS 8.4 and earlier.
Xcode 6.4 does not support iOS 7.1.2 and earlier.
Running the following command in Terminal
and then downloading the simulator 7.1 works for me. I'm using Xcode 6.4, OS X El Capitan.