[StreamBright]

The problem is that you are thinking of offline access when encryption is relevant, what I am thinking about is online access, for example let the device boot, connect it to a familiar wifi access point that is modified to redirect the normal iOS traffic to a site that infects the phone with a malware that opens it to unauthorized access. I am not sure if it is feasible though.

[jonknee]

The phone can't decrypt itself, it literally doesn't know how.