You should be able to DFU, but when it phones home it'll require a software upgrade

Apple recently had an issue with expired certs they had to remedy. That tends to be their bottleneck now.

	▲	benoliver999 22 minutes ago \| parent [-]
		Yeah that just tripped me up trying to recomission a 2012 Macbook Pro. Couldn't connect to wifi except through a password-less hotspot. Then I couldnt get online because nothing with SSL was working. I didnt have a pen drive so I had to FTP off another machine, via my phone hotspot. We got there though!