I have the same problem with Big Sur. How can we download directly, Quinn? The downloads page you linked only has the option to download from the App Store.

That worked! Good to know, thanks!

Yeah, it took 11 hours but finally finished.

No, I didn't try it with earlier versions of Xcode as I no longer have that on my system. With Xcode 16, target iOS 17 and use it on an older simulator and you can see it's fine on iOS 17.