You can download the runtime you want from here. By downloading it directly, you can use a downloader (can be your browser) that allows you to resume downloads. After downloading, follow these instructions to add the runtime to Xcode.

You can download the runtime you want from here. By downloading it directly, you can use a downloader (can be your browser) that allows you to resume downloads. After downloading, follow these instructions to add the runtime to Xcode.