Xcode 6.3 not running iOS 8.4 - update to 6.4 fails

Question

I have upgraded my iOS to 8.4, then I tried to run Xcode 6.3, it asks it can't mount the device since it's running 8.4 version (".. running a version of iOS that is not supported by this version of Xcode.") When I try to upgrade Xcode to 6.4 - update fails every time with error message (try again using purchases).

Any suggestions how to solve this?

Answer 1

• Delete /Applications/Xcode.app.
• Download Xcode 6.4 from the Apple Developer Download site.
• Mount the .dmg and extract Xcode.app into /Applications.

Answer 2

You don't need to delete /Applications/Xcode.app.

1. Open a terminal.
2. Copy this: xcode-select --install and paste it in the terminal
3. Install.
4. After the install has completed, you can see in the App Store that is possible to update your Xcode.

I did that and I can update my Xcode from 6.3 to 6.4.