Blocking downloading dev/beta profiles.
https://www.macrumors.com/2023/02/19/apple-ios-17-developer-beta-crack-down/
Starting with the iOS 16.4 beta, the iPhone has a new “Beta Updates” menu in the Settings app under General → Software Update. This menu will allow members of Apple’s Developer Program to enable iOS developer betas directly on an iPhone, without needing to install a configuration profile from the Apple Developer website…
This change will prevent iPhone users who aren’t enrolled in Apple’s Developer Program for $99 per year from installing the iOS 17 developer beta for free when it is released at WWDC in June…