We have iOS updates restricted to 30 days from release to hopefully work out kinks was the thinking. Our entire fleet was on 11.3.1 a handful of students upgraded themselves to 11.4.1 which was all good. We have had some charging issues and apple wants us to upgrade all to 11.4.1. Doing my small tests before sending it out globally I am running into about half not able to auto download and install. When I grab the devices there is already a red 1 next to general but when I click on Software Update it says Unable to Check for Update and are stuck on 11.3.1. Do I have to get rid of Software deferment? Anyone have any leads to check into?