There’s an alternate method of firmware installation on the phone, that was added in the 1_4_1 release. Visit http://[ip of phone]/firmware and you can login using the username admin and the phone’s UI password (defaults to 789). This requires that the server not be enforcing a firmware.
Hi Malcolm,
disconnected the server running DPMA and factory resetted on mere DHCP. Still the phone’s web interface stays disabled… Is the phone bricked?