Apple appears to have accidentally released the configuration profile for the iOS 14 Developer Beta Developer Preview update, and then realized the error and quickly withdrew the file.
The configuration profile was taken from the Apple developer website developer.apple.com, and it has now been unable to access web pages related to iOS 14.
Some users had previously installed the configuration profile for iOS 14, but Apple quickly cleared the contents of the configuration file.
The OTA will not be able to download the OTA update even if you install the configuration profile.
Even if you could download the iOS 14 firmware, it wouldn't install properly, which means that Apple controls everything and iOS 14 can't be easily compromised.