DEP not releasing devices

[Sheridan]

We've got some ipads (DEP) that kept failing to download apps from the MDM. Long story short we gave up and tried to re-prepare them, which failed as they then were stuck in the loop trying to load the configuration and then failing (even on a home wifi connection)

 

So last resort we released them from DEP to start them as 'fresh' devices. And even that didn't work as they still boot up and go to 'retrieving configuration' as if they were DEP managed and connecting to the MDM! I've DFU'd a couple and the end result is still the same.

 

So thanks to Apple we now have a bunch of unusable, 'DEP but not DEP' devices, is the only option to return them to Apple with the original invoice?

[Steve101]

Have you tried plugging one into your computer and seeing if it opens up in itunes?

[Sheridan]

Yeah - reset that way and on reboot it still tries to connect to the MDM, and then fails!

[pooley]

Have you removed it from your MDM as well as ASM ?

[Sheridan]

I'd removed them from both MDM and ASM - I've since reconnected the MDM in ASM (it didn't expire until next year though) and so far preparing 2 of them has now worked!