For macOS High Sierra 10.13.6, the latest fully compatible version of Xcode is Xcode 10.1. While newer versions of Xcode exist, they generally require macOS Mojave 10.14 or later. Recommended Version
Xcode 10.1 supports iOS 12.1 by default. To test on older devices:
Before clicking any download buttons, you must understand the hard limitations of High Sierra. Apple does not backport new developer tools to old operating systems. Here is the definitive compatibility chart: download xcode for mac os high sierra 10136 work
Launch Terminal and run:
Before you begin, make sure your Mac meets the system requirements. Click the Apple menu and select About This Mac. Check your Mac's specifications, including the operating system version, processor, memory, and storage. For macOS High Sierra 10
He plugged in the stick. He copied the new app over the old one. He double-clicked.
Compare the output with Apple’s official checksum (you can find this on the download page or via developer forums). If it matches, you are safe. Install Old Simulators (iOS 12
Xcode want install on high Sierra 10.13. 6. ... You're now watching this thread. If you've opted in to email or web notifications, Apple Developer
Xcode 10.1 (10B61) – Released November 5, 2018