Should be as simple as tweaking the download url to suit, you can find 12.x version numbers over here on the Xamarin iOS 12 release notes page. For me this is … however your requirements may vary. In the meantime I had downloaded the latest 12.16 release of Xamarin iOS. Execute these commands line by line (entering your admin password when required) rm -rf ~/Library/MonoTouch So, the solution, first off come out of Visual Studio for Mac, and then drop to Terminal app. Mojave of course is 10.14, Catalina 10.15, so I have to upgrade right, and lose a day of productivity (or more) with it? Wrong. Off to the App Store I go, just to confirm, and of course My selected version of Xamarin iOS required an Xcode upgrade to 11.x.
In essence I’ve upgraded the version of Xamarin iOS from somewhere in the 12.x range to 13.16. I knew the second I’d upgraded it had gone wrong, but opening a Xamarin iOS / Forms project instantly told me. Like many developers I have a reluctance to go to Mac OS Catalina (a lot of changes, and too many issues) and am quite happy in the stable, stable land of Mojave. Why you may ask, an update is good? No? Well not here. So, here’s the scenario, fire up Visual Studio for the Mac, not enough caffeine in the system, an ‘updates’ box pop up, a Xamarin iOS update amongst many, you click ok, then instant regret 😟.
