Well, I got mine to work. First thing I had to fix was my wireless. I added a profile to a network that we use here that goes right to the internet without any firewall rules. Someone in Jamfnation posted this (which is how I got it to work for me):
" Updated/Restored iPads to iOS 11 -- a prerequisite action for adding to DEP.
- In Apple Configurator 2.5
-> Click Prepare Button
-> Ticked the Option "Add to Device Enrolment Program"
-> unticked the automate enrolment (I like to setup from the iPad for a true OTA config).
-> Created a DEP Wifi profile that uses the MacBook Pro Internet Sharing SSID
-> Configured the remaining steps relating to supervision and iOS steps (i selected: don't show any).
-> When it asked for the Apple ID to add to DEP, I chose the account that has the 'Device Manager' or 'Administrator' role in Apple School Manager (ASM). - In ASM, go to MDM Server -> Devices added by Apple Configurator 2
-> Keep an eye on the number of devices added on the "Devices added by Apple Configurator", if it changed from 0, the above action has added the devices into DEP server.
-> Click on the blue 'download' link next to the device type and quantity added which downloads a csv file.
-> Open the CSV file, copy the Serial Numbers (first column, row 2 onwards) and use a text editor to format the serial numbers in comma versions, e.g. SN1, SN2 - In ASM, go to Device Assignment
-> Put the formatted serial numbers from the text editor in previous step and put them in the Serial Number textbox.
-> Below, chose the option 'Assign to server' dropdown, and then on the right my institution Jamf Pro MDM server - In Jamf Pro, go to Mobile Devices and then PreStage Enrolment
-> Click on the existing PreStage enrolment or create a new PreStage enrolment
-> Go to scope & click refresh button
-> Click edit and assign the iPads that has the modified date: "added less than a minute ago" - In Apple Configurator 2.5
-> Performed another restore onto the iPads and then setup the freshly restored iPad without the Apple Configurator just as you would setup a DEP iPad.
-> This step was to remove any supervision profiles that was performed during the prepare stages, the idea is to see "Activating iPad" message -- and if you performed step 3 to 5 correctly, you should see "Looking for configuration/Downloading Configuration" and then "Remote Management" screen showing up -- this means DEP is working and applied.
My PreStage enrolment has user authentication to an Active Directory, so when an AD account is used, e.g. a student account, it gets assigned to the iPad record in Jamf along with Department, Job Position, Building info etc, which triggers all the Apps and configuration profiles that has been scoped to the Department/Smart Group.
This has worked pretty well for me. My 2 cents of experience.
(Apologies for the long post)
EDIT: If only there was an option to add MacBook/iMacs to the DEP servers.
Thanks,
Nuno
Pymble Ladies College - Technical Support Officer"
Now I have a device added to DEP!