Xcode 6 GM with iPhone 5s (iOS 8 GM) - 0xE8000070

Question

I'm using Xcode 6 GM Seed (build 6A313) with iPhone 5s (Model A1530, iOS 8 build 12A365). I connect the iPhone via USB lightning cable. But in Xcode, it shows as: "iPhone 5s (unavailable)".

Further investigation: I open Xcode menu > Window > Devices, it shows the following error:

An error was encountered while enabling development on this device.

Please try rebooting and reconnecting the device. (0xE8000070)

I reboot and reconnect my iPhone 5s, the same error is shown. This device was used for development in previous Xcode 5, and shows no problem at all.

What should I do? I want to try my apps in iOS 8 device.

Answer 1

If you are using Xcode-beta 7.1 and want to run app on iOS 9.0 like me you will also get the same error. The solution is:

1. Use corresponding iOS 9.1-beta.
2. Use Xcode 7.0
3. Run on simulator.

Answer 2

The problem is resolved after I updated iTunes to version 11.4 via Software Updates.

The Xcode error message is misleading.