Prevent updating to IOS12 - Best choice?

oddity-mdm
New Contributor III

Hi,

which is the best alternative to prevent users updating there phones to IOS12? I got following information from Jamf Nation and looking around:

Configuration profiles with restrictions (Devices -> configuration profiles -> restrictions)
Activate "Defer software update for ... days"

Block the URL mesu.apple.com
https://www.jamf.com/jamf-nation/discussions/25389/prevent-ios-11-install
So I need to copy the script in a policy, which gets activated if someone presses the update button in the App Store. How would I implement such a trigger?

Block App Store Updates completely?
How would I do this for Phones only?

Are there any more possibilities? Which is the best one?

Best regards
Maurice

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