Step 3: (This is the reason why we need Xcode 10.1 installed) ist contents with the edited Minimum System VersionĪdditionally, navigate to Xcode.app/Contents/Developer/Applications/Simulator.app/Contents/ edit ist and also change the Minimum System Version to 10.13.6. Navigate to Xcode 10.2.1.app/Contents/ and edit the file ist, change the Minimum System Version to 10.13.6 (it should have 10.14.3 originally written on it), make sure to save. Open the app directory (right click->show package contents) of your xcode 10.2.1 app The logo of Xcode should have an error icon on it, you can ignore this for now Xcode 10.1 vs (Incompatible) Xcode 10.2.1 Step 2: xim file (exacting the file will automatically uncompress and install that version of Xcode ready to use – you may rename the application to Xcode 10.2.1 if you wish as to avoid confusion). xim file for Xcode 10.1 – it will automatically uncompress and have Xcode 10.1 installed and ready to use – you may rename the application to Xcode 10.1 to avoid confusion in the next parts) Xcode direct download from apple developer siteĪfter download completes (for Xcode 10.2.1) extract the. Important!: If you don’t have Xcode installed yet also download and install 10.1 (you can do this by exacting the. Log-in your Apple account and download Xcode 10.2.1 (or whatever is the latest) Please note that we won’t be using the App Store to do this Step 1: Presenting: Installing/Updating Xcode 10.1 to Xcode to 10.2.1 on Mac OS High Sierra (10.13.6) or Mac OS Mojave (10.4.0) We found that these steps work for us and we cannot guarantee if it will work for you. This is not in anyway supported by Apple as they have specifically set the new version of Xcode 10.2.1 for the latest OS only.

Please do note however that this is a workaround. We at CodeWithChris however, found a solution to this dilemma! Recently Apple has updated Xcode to only work with the latest Mac OS Mojave (10.4.4), this means that developers who have old Macs won’t be able to update their OS and develop in Swift 5 using Xcode 10.2.1. If your question is “How to update Xcode 10.1 to Xcode 10.2.1?” then you have come to the right place!

Xcode unable to install app