I havent issued the iOS update commands from the JSS. All of my ipads are on 11.2.5 and commands either take forever to actually apply on the ipad, (Erase device has taken upwards of 45 minutes after consistently sending blank pushes) or they dont take at all. As far as i know this has only started happening since yesterday when our Jamf Cloud instance was upgraded to 10.3. I have checked with out networking team as well and have looked through the firewall logs and nothing is being blocked or has changed.

@FastGM3 When you send the MDM Software Update command to upgrade to iOS 11.3, the device should go through the upgrade properly and the device should be usable by end users. The 'OSUpdateStatus' command that I outlined above is then designed to verify the upgrade is complete. Because that command fails on iOS 11.3, it prevents any subsequent commands from completing successfully. That includes update inventory, which would update your reported iOS version. That's why no devices are reporting their successful upgrade to iOS 11.3. With the upcoming maintenance release, that failed response will be accepted and devices will resume normal behavior as managed devices.

I havent issued any iOS update commands though

@miregan I would recommend contacting Jamf Support so we can help determine what might be causing the performance issues you're describing.

Done already. It literally started happening after the 10.3 upgrade yesterday

Today, we released Jamf Pro 10.3.1. See discussion and release notes for full details.

In the same boat...... Doing support with Jamf, they recommended upgrading to JSS 10.5: issue persist. Can't even do an OTA update on the iPad itself, it fails. Never even downloads the iOS, message shows on the iPads the update request failed. I've had to connect iPads to a computer and do the update to iOS 11.4. That seems to fix the issue and all works as expected after the iPads are updated to 11.4. Now I have to locate and do this for my 1600 out of 2200 devices having issues........