Block iOS Updates

Question

Hi, 
 we have a customer who wants to disable iOS updates by default and only wants to force the update when the developer of the company permit it. The customer doesn't use SMC at the moment and would use the newest version if he decides to buy it. 
 I could not find an option for blocking the update in the administration manual and could only find this 2y old post regarding the topic: https://community.sophos.com/products/mobile/f/sophos-mobile-control/10728/how-block-restrict-ios-firmware-updates---smc-server-version-5-1-3-rev-3921 
 Since we can now force an update I hope that we can also block it. 
 Can you help me with this? 
 Thanks

Andrew Mullins · Answer

this would be nice however i suspect that apple would not allow this to happen on the devices, however if they use internal network you can make a dns change so that 
 Mesu.apple.com resolves to an unknown IP so that devices connected to the network cannot get to the updating server.

Barbara vega · Answer

Open Settings and go to &ldquo;General&rdquo; 
 Choose &ldquo;Storage & iCloud Usage&rdquo; 
 Go to &ldquo;Manage Storage&rdquo; 
 Locate the iOS software update that is nagging you and tap on it. 
 Tap on &ldquo;Delete Update&rdquo; and confirm that you want to delete the update* 
 
 Thats about it.

Andrew Mullins · Answer

you can now use a restrictions profile to block ios updates for upto 90 days after release.